Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
Document and Entity Information - USD ($) $ in Thousands	Dec. 31, 2016	Feb. 10, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Trading Symbol	NVR
Entity Registrant Name	NVR INC
Entity Central Index Key	0000906163
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		3,704,206
Entity Public Float			$ 6,489,296

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 396,619	$ 425,316
Inventory:
Land under development	46,999	60,611
Contract land deposits, net	379,844	343,295
Total assets	2,643,943	2,511,718
LIABILITIES AND SHAREHOLDERS' EQUITY
Total liabilities	1,339,502	1,272,553
Commitments and contingencies
Shareholders' equity:
Common stock, $0.01 par value; 60,000,000 shares authorized; 20,555,330 shares issued as of both December 31, 2016 and December 31, 2015	206	206
Additional paid-in capital	1,515,828	1,447,795
Deferred compensation trust – 108,640 and 108,614 shares of NVR, Inc. common stock as of December 31, 2016 and December 31, 2015, respectively	(17,375)	(17,333)
Deferred compensation liability	17,375	17,333
Retained earnings	5,695,376	5,270,114
Less treasury stock at cost – 16,862,327 and 16,664,342 shares as of December 31, 2016 and December 31, 2015, respectively	(5,906,969)	(5,478,950)
Total shareholders' equity	1,304,441	1,239,165
Total liabilities and shareholders' equity	2,643,943	2,511,718
Homebuilding [Member]
ASSETS
Cash and cash equivalents	375,748	397,522
Restricted cash	17,561	23,440
Receivables	18,937	11,482
Inventory:
Lots and housing units, covered under sales agreements with customers	883,868	785,982
Unsold lots and housing units	145,065	147,832
Land under development	46,999	60,611
Building materials and other	16,168	12,101
Total Inventory	1,092,100	1,006,526
Assets related to consolidated variable interest entity	1,251	1,749
Contract land deposits, net	379,844	343,295
Property, plant and equipment, net	45,915	44,651
Reorganization value in excess of amounts allocable to identifiable assets, net	41,580	41,580
Goodwill and finite-lived intangible assets, net	2,599	3,982
Deferred tax assets, net	170,652	161,805
Other assets	87,159	96,136
Total assets	2,233,346	2,132,168
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	251,212	227,437
Accrued expenses and other liabilities	336,318	304,922
Liabilities related to consolidated variable interest entity	882	1,091
Customer deposits	122,236	110,965
Senior notes	596,455	595,847
Total liabilities	1,307,103	1,240,262
Mortgage Banking [Member]
ASSETS
Cash and cash equivalents	19,657	26,804
Restricted cash	1,857	2,038
Mortgage loans held for sale, net	351,958	319,553
Inventory:
Property, plant and equipment, net	4,903	5,313
Reorganization value in excess of amounts allocable to identifiable assets, net	7,347	7,347
Other assets	24,875	18,495
Total assets	410,597	379,550
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable and other liabilities	32,399	32,291
Total liabilities	$ 32,399	$ 32,291

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	20,555,330	20,555,330
Deferred compensation trust, shares	108,640	108,614
Treasury stock, shares	16,862,327	16,664,342

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest expense	$ (21,707)	$ (23,559)	$ (23,140)
Income before taxes	661,697	603,212	453,546
Income tax expense	(236,435)	(220,285)	(171,916)
Net income	$ 425,262	$ 382,927	$ 281,630
Basic earnings per share	$ 110.53	$ 95.21	$ 65.83
Diluted earnings per share	$ 103.61	$ 89.99	$ 63.50
Basic weighted average shares outstanding	3,847	4,022	4,278
Diluted weighted average shares outstanding	4,104	4,255	4,435
Homebuilding [Member]
Revenues	$ 5,709,223	$ 5,065,200	$ 4,375,059
Other income	2,820	2,956	2,853
Cost of sales	(4,707,861)	(4,118,782)	(3,568,586)
Selling, general and administrative	(382,459)	(371,127)	(358,851)
Operating income	621,723	578,247	450,475
Interest expense	(20,621)	(22,918)	(22,591)
Income before taxes	601,102	555,329	427,884
Mortgage Banking [Member]
Mortgage banking fees	113,321	93,808	69,509
Interest income	7,569	6,485	4,940
Other income	1,652	1,113	778
General and administrative	(60,861)	(52,882)	(49,016)
Interest expense	(1,086)	(641)	(549)
Income before taxes	$ 60,595	$ 47,883	$ 25,662

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In-Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Deferred Compensation Trust [Member]	Deferred Compensation Liability [Member]
Beginning Balance at Dec. 31, 2013	$ 1,261,352	$ 206	$ 1,212,050	$ 4,605,557	$ (4,556,461)	$ (17,741)	$ 17,741
Net income	281,630			281,630
Deferred compensation activity						408	(408)
Purchase of common stock for treasury	(567,544)				(567,544)
Equity-based compensation	63,227		63,227
Tax benefit from equity benefit plan activity	9,437		9,437
Proceeds from stock options exercised	76,153		76,153
Treasury stock issued upon option exercise and restricted share vesting			(35,372)		35,372
Ending Balance at Dec. 31, 2014	1,124,255	206	1,325,495	4,887,187	(5,088,633)	(17,333)	17,333
Net income	382,927			382,927
Purchase of common stock for treasury	(431,367)				(431,367)
Equity-based compensation	54,091		54,091
Tax benefit from equity benefit plan activity	23,311		23,311
Proceeds from stock options exercised	85,948		85,948
Treasury stock issued upon option exercise and restricted share vesting			(41,050)		41,050
Ending Balance at Dec. 31, 2015	1,239,165	206	1,447,795	5,270,114	(5,478,950)	(17,333)	17,333
Net income	425,262			425,262
Deferred compensation activity						(42)	42
Purchase of common stock for treasury	(455,351)				(455,351)
Equity-based compensation	43,598		43,598
Tax benefit from equity benefit plan activity	13,661		13,661
Proceeds from stock options exercised	38,106		38,106
Treasury stock issued upon option exercise and restricted share vesting			(27,332)		27,332
Ending Balance at Dec. 31, 2016	$ 1,304,441	$ 206	$ 1,515,828	$ 5,695,376	$ (5,906,969)	$ (17,375)	$ 17,375

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 425,262	$ 382,927	$ 281,630
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,269	21,534	17,614
Excess income tax benefit from equity-based compensation	(13,661)	(23,311)	(9,437)
Equity-based compensation expense	43,598	54,091	63,227
Contract land deposit recoveries, net	(4,269)	(11,058)	(225)
Gain on sale of loans, net	(85,535)	(67,891)	(47,791)
Deferred tax (benefit) expense	(10,024)	1,902	(4,176)
Mortgage loans closed	(3,660,269)	(3,111,413)	(2,469,876)
Mortgage loans sold and principal payments on mortgage loans held for sale	3,710,250	3,059,889	2,525,706
Distribution of earnings from unconsolidated joint ventures	9,094	15,511	8,431
Net change in assets and liabilities:
Increase in inventory	(85,194)	(134,803)	(127,729)
Increase in contract land deposits	(32,280)	(37,561)	(57,566)
Increase in receivables	(9,083)	(1,527)	(533)
Increase in accounts payable and accrued expenses	58,532	55,404	60
Increase in customer deposits	11,271	4,210	5,733
Other, net	4,504	(4,513)	(519)
Net cash provided by operating activities	384,465	203,391	184,549
Cash flows from investing activities:
Investments in and advances to unconsolidated joint ventures	(653)	(1,917)
Distribution of capital from unconsolidated joint ventures	12,594	18,489	11,569
Purchase of property, plant and equipment	(22,369)	(18,277)	(31,672)
Proceeds from the sale of property, plant and equipment	1,000	683	1,021
Net cash used in investing activities	(9,428)	(1,022)	(19,082)
Cash flows from financing activities:
Purchase of treasury stock	(455,351)	(431,367)	(567,544)
Net repayments under note payable and credit lines			(115)
Repayments under non-recourse debt related to consolidated variable interest entity		(64)	(3,301)
Distributions to partner in consolidated variable interest entity	(150)	(300)	(931)
Excess income tax benefit from equity-based compensation	13,661	23,311	9,437
Proceeds from the exercise of stock options	38,106	85,948	76,153
Net cash used in financing activities	(403,734)	(322,472)	(486,301)
Net decrease in cash and cash equivalents	(28,697)	(120,103)	(320,834)
Cash and cash equivalents, beginning of the year	425,316	545,419	866,253
Cash and cash equivalents, end of the year	396,619	425,316	545,419
Supplemental disclosures of cash flow information:
Interest paid during the year, net of interest capitalized	20,922	24,546	24,464
Income taxes paid during the year, net of refunds	$ 218,984	$ 194,670	$ 181,840

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

1.	Summary of Significant Accounting Policies

Principles of Consolidation

The accompanying consolidated financial statements include the accounts of NVR, Inc. and its subsidiaries (“NVR” or the “Company”) and certain other entities in which the Company is deemed to be the primary beneficiary (see Notes 3 and 4 herein for additional information). All significant intercompany transactions have been eliminated in consolidation.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting periods. Management continually evaluates the estimates used to prepare the consolidated financial statements and updates those estimates as necessary. In general, the Company’s estimates are based on historical experience, on information from third party professionals, and other various assumptions that are believed to be reasonable under the facts and circumstances. Actual results could differ materially from those estimates made by management.

Cash and Cash Equivalents

Cash and cash equivalents include short-term investments with original maturities of three months or less. At December 31, 2016 and 2015, $1,214 and $990, respectively, of cash related to a consolidated variable interest entity is included in “Assets related to consolidated variable interest entity” on the accompanying consolidated balance sheet.

The homebuilding segment had restricted cash of $17,561 and $23,440 at December 31, 2016 and 2015, respectively. Restricted cash in 2016 was attributable to customer deposits for certain home sales. Restricted cash in 2015 was attributable to holding requirements related to outstanding letters of credit issued under the Company’s letter of credit agreement and to customer deposits for certain home sales.

The mortgage banking segment had restricted cash of $1,857 and $2,038 at December 31, 2016 and 2015, respectively, which included amounts collected from customers for loans in process and closed mortgage loans held for sale.

Homebuilding Inventory

The carrying value of inventory is stated at the lower of cost or market value. Cost of lots and completed and uncompleted housing units represent the accumulated actual cost of the units. Field construction supervisors’ salaries and related direct overhead expenses are included in inventory costs. Interest costs are not capitalized into inventory, with the exception of land under development and joint venture investments, as applicable (see below). Upon settlement, the cost of the unit is expensed on a specific identification basis. Cost of building materials is determined on a first-in, first-out basis.

Sold inventory is evaluated for impairment based on the contractual sales price compared to the total estimated cost to construct plus a reasonable profit margin. Unsold inventory is evaluated for impairment by analyzing recent comparable sales prices within the applicable community compared to the costs incurred to date plus the expected costs to complete and a reasonable profit margin. Any calculated impairments are recorded immediately.

Contract Land Deposits

The Company purchases finished lots under fixed price lot purchase agreements (“Lot Purchase Agreements”) that require deposits that may be forfeited if NVR fails to perform under the contract. The deposits are in the form of cash or letters of credit in varying amounts and represent a percentage of the aggregate purchase price of the finished lots.

NVR maintains an allowance for losses on contract land deposits that reflects the Company’s judgment of the present loss exposure in the existing contract land deposit portfolio at the end of the reporting period. To analyze contract land deposit impairments, NVR utilizes an Accounting Standards Codification (“ASC”) 450, Contingencies, loss contingency analysis that is conducted each quarter. In addition to considering market and economic conditions, NVR assesses contract land deposit impairments on a community-by-community basis pursuant to the purchase contract terms, analyzing, as applicable, current sales absorption levels, recent sales’ direct profit, the dollar differential between the contractual purchase price and the current market price for lots, a developer’s financial stability, a developer’s financial ability or willingness to reduce lot prices to current market prices, and the contract’s default status by either the Company or the developer along with an analysis of the expected outcome of any such default.

NVR’s analysis is focused on whether the Company can sell houses at an acceptable margin and sales pace in a particular community in the current market with which the Company is faced. Because the Company does not own the finished lots on which the Company has placed a contract land deposit, if the above analysis leads to a determination that the Company cannot sell homes at an acceptable margin and sales pace at the current contractual lot price, the Company then determines whether it will elect to default under the contract, forfeit the deposit and terminate the contract, or whether the Company will attempt to restructure the lot purchase contract, which may require it to forfeit the deposit to obtain contract concessions from a developer. The Company also assesses whether impairment is present due to collectability issues resulting from a developer’s non-performance because of financial or other conditions.

For the years ended December 31, 2016, 2015 and 2014, the Company recognized net pre-tax recoveries of $4,269, $11,058 and $225, respectively, of contract land deposits previously determined to be unrecoverable. The contract land deposit assets on the accompanying consolidated balance sheets are shown net of $31,306 and $42,239 impairment valuation allowances at December 31, 2016 and 2015, respectively.

Land Under Development

On a limited basis, NVR directly acquires raw parcels of land already zoned for its intended use to develop into finished lots. Land under development includes the land acquisition costs, direct improvement costs, capitalized interest, where applicable, and real estate taxes.

Land under development, including the land under development held by the Company’s unconsolidated joint ventures and the related joint venture investments, is reviewed for potential write-downs when impairment indicators are present. In addition to considering market and economic conditions, the Company assesses land under development impairments on a community-by-community basis, analyzing, as applicable, current sales absorption levels, recent sales’ direct profit, and the dollar differential between the projected fully-developed cost of the lots and the current market price for lots. If indicators of impairment are present for a community, NVR performs an analysis to determine if the undiscounted cash flows estimated to be generated by those assets are less than their carrying amounts, and if so, impairment charges are required to be recorded if the fair value of such assets is less than their carrying amounts. For those assets deemed to be impaired, the impairment to be recognized is measured as the amount by which the carrying amount of the assets exceeds the fair value of the assets. The Company’s determination of fair value is primarily based on discounting the estimated future cash flows at a rate commensurate with the inherent risks associated with the assets and related estimated cash flow streams. NVR does not believe that any of the land under development is impaired at this time.

Property, Plant, and Equipment

Property, plant, and equipment are carried at cost less accumulated depreciation and amortization. Depreciation is based on the estimated useful lives of the assets using the straight-line method. Model home furniture and fixtures are generally depreciated over a two-year period, office facilities and other equipment are depreciated over a period of three to ten years and production facilities are depreciated over periods of five to forty years.

Intangible Assets

On December 31, 2012, the Company acquired substantially all of the assets of Heartland Homes, Inc., which resulted in the Company recording finite-lived intangible assets and goodwill. The Company completed its annual assessment for impairment of goodwill and management determined that there was no impairment. As of December 31, 2016 and 2015, finite-lived intangible assets attributable to the Heartland Homes, Inc. acquisition, net of accumulated amortization, totaled $2,158 and $3,541, respectively. As of both December 31, 2016 and 2015, the goodwill value was $441. The remaining finite-lived intangible assets will be amortized on a straight-line basis over a weighted average life of 3 years.

Warranty/Product Liability Accruals

The Company establishes warranty and product liability reserves to provide for estimated future expenses as a result of construction and product defects, product recalls and litigation incidental to NVR’s homebuilding business. Liability estimates are determined based on management’s judgment considering such factors as historical experience, the likely current cost of corrective action, manufacturers’ and subcontractors’ participation in sharing the cost of corrective action, consultations with third party experts such as engineers, and discussions with the Company’s General Counsel and outside counsel retained to handle specific product liability cases.

Mortgage Loans Held for Sale, Derivatives and Hedging Activities

NVR originates several different loan products to its customers to finance the purchase of a home through its wholly-owned mortgage subsidiary, NVR Mortgage Finance, Inc. (“NVRM”). NVRM sells all of the loans it originates into the secondary market on a servicing released basis, typically within 30 days from origination. All of the loans that NVRM originates are underwritten to the standards and specifications of the ultimate investor. Those underwriting standards are typically equal to or more stringent than the underwriting standards required by Fannie Mae (“FNMA”), the Department of Veterans Affairs (“VA”) and the Federal Housing Administration (“FHA”). Insofar as NVRM underwrites its originated loans to those standards, NVRM bears no increased concentration of credit risk from the issuance of loans, except in certain limited instances where early payment default occurs. NVRM employs a quality control department to ensure that its underwriting controls are effectively operating, and further assesses the underwriting function as part of its assessment of internal controls over financial reporting. NVRM maintains an allowance for losses on mortgage loans originated that reflects NVR’s judgment of the present loss exposure in the loans that NVRM has originated and sold. The allowance is calculated based on an analysis of historical experience and exposure (see Note 15 herein for further information).

Mortgage loans held for sale are carried at the lower of cost or fair value, net of deferred origination costs, until sold.

In the normal course of business, NVRM enters into contractual commitments to extend credit to buyers of single-family homes with fixed expiration dates. The commitments become effective when the borrowers “lock-in” a specified interest rate within time frames established by NVRM. All mortgagors are evaluated for credit worthiness prior to the extension of the commitment. Market risk arises if interest rates move adversely between the time of the “lock-in” of rates by the borrower and the sale date of the loan to a broker/dealer. To mitigate the effect of the interest rate risk inherent in providing rate lock commitments to borrowers, NVRM enters into optional or mandatory delivery forward sale contracts to sell whole loans and mortgage-backed securities to broker/dealers. The forward sale contracts lock in an interest rate and price for the sale of loans similar to the specific rate lock commitments. NVRM does not engage in speculative or trading derivative activities. Both the rate lock commitments to borrowers and the forward sale contracts to broker/dealers are undesignated derivatives, and, accordingly, are marked to fair value through earnings. At December 31, 2016, there were contractual commitments to extend credit to borrowers aggregating $458,161, and open forward delivery sale contracts aggregating $738,637, which hedge both the rate lock loan commitments and closed loans held for sale (see Note 14 herein for a description of the Company’s fair value accounting).

Earnings per Share

The following weighted average shares and share equivalents were used to calculate basic and diluted earnings per share for the years ended December 31, 2016, 2015 and 2014:

	Year Ended December 31,
	2016		2015		2014
Weighted average number of shares outstanding used to calculate basic EPS		3,847		4,022		4,278
Dilutive securities:
Stock options and restricted share units		257		233		157
Weighted average number of shares and share equivalents outstanding used to calculate diluted EPS		4,104		4,255		4,435

The assumed proceeds used in the treasury method for calculating NVR’s diluted earnings per share includes the amount the employee must pay upon exercise, the amount of compensation cost attributed to future services not yet recognized and the amount of tax benefits that would be credited or charged to additional paid-in capital assuming exercise of the stock option or vesting of the restricted share unit. The assumed amount credited to additional paid-in capital equals the tax benefit from assumed exercise of stock options or the assumed vesting of restricted share units after consideration of the intrinsic value upon assumed exercise or vesting less the actual stock-based compensation expense to be recognized in the income statement.

The following stock options and restricted share units issued under equity incentive plans were outstanding during the years ended December 31, 2016, 2015 and 2014; however, they were not included in the computation of diluted earnings per share because the effect would have been anti-dilutive.

	Year Ended December 31,
	2016		2015		2014
Anti-dilutive securities		87		50		757

Revenues – Homebuilding Operations

NVR builds single-family detached homes, townhomes and condominium buildings, which generally are constructed on a pre-sold basis for the ultimate customer. Revenues are recognized at the time the unit is settled and title passes to the customer, adequate cash payment has been received and there is no continuing involvement. In situations where the buyer’s financing is originated by NVRM and the buyer has not made an adequate initial or continuing investment as prescribed by GAAP, the profit on such settlement is deferred until the sale of the related loan to a third-party investor has been completed.

Mortgage Banking Fees

Mortgage banking fees include income earned by NVRM for originating mortgage loans, servicing mortgage loans held on an interim basis, title fees, gains and losses on the sale of mortgage loans and mortgage servicing and other activities incidental to mortgage banking. Mortgage banking fees are generally recognized after the loan has been sold to an unaffiliated, third party investor.

Income Taxes

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on the deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

ASC 740-10, Income Taxes, provides that a tax benefit from an uncertain tax position may be recognized when it is more-likely-than-not (defined as a likelihood of more than 50%) that the position will be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits. If a tax position does not meet the more-likely-than-not recognition threshold, despite the Company’s belief that its filing position is supportable, the benefit of that tax position is not recognized in the statements of income. The Company recognizes interest related to unrecognized tax benefits as a component of income tax expense. Based on its historical experience in dealing with various taxing authorities, the Company has found that it is the administrative practice of the taxing authorities to not seek penalties from the Company for the tax positions it has taken on its returns, related to its unrecognized tax benefits. Therefore, the Company does not accrue penalties for the positions in which it has an unrecognized tax benefit. However, if such penalties were to be accrued, they would be recorded as a component of income tax expense. The Company recognizes unrecognized tax benefits in the period that the uncertainty is eliminated by either affirmative agreement of the uncertain tax position by the applicable taxing authority, by expiration of the applicable statute of limitation, or by determination in accordance with certain states’ administrative practices that the uncertain tax position has been effectively settled (see Note 11 herein for further information).

Financial Instruments

Except as otherwise noted herein, NVR believes that insignificant differences exist between the carrying value and the fair value of its financial instruments (see Note 14 herein for further information).

Equity-Based Compensation

The company accounts for its equity-based compensation in accordance with ASC 718, Compensation – Stock Compensation. ASC 718 requires an entity to recognize an expense within its income statement for all share-based payment arrangements, which includes employee stock option and restricted share unit plans. The expense is based on the grant-date fair value of the stock options and restricted share units granted, and is recognized ratably over the requisite service period. Recognition of compensation expense for the stock options which are subject to a performance condition are treated as a separate award from the “service-only” stock options, and expense is recognized when it becomes probable that the stated performance target will be achieved. The Company calculates the fair value of its non-publicly traded, employee stock options using the Black-Scholes option-pricing model. The grant date fair value of the restricted share units is the closing price of the Company’s common stock on the day immediately preceding the date of grant. The Company’s equity-based compensation programs are accounted for as equity-classified awards (see Note 12 herein for further discussion of equity-based compensation plans).

Comprehensive Income

For the years ended December 31, 2016, 2015 and 2014, comprehensive income equaled net income; therefore, a separate statement of comprehensive income is not included in the accompanying consolidated financial statements.

Reclassifications

Certain prior period amounts have been reclassified to conform to 2016 presentation.

Recent Accounting Pronouncements

In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-03, Interest – Imputation of Interest (Subtopic 835-30) – Simplifying the Presentation of Debt Issuance Costs. The standard requires that debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the debt liability, rather than as an asset. On January 1, 2016, the Company adopted the standard which on a retrospective basis resulted in the reclassification of the unamortized debt issuance costs related to the Company’s 3.95% Senior Notes due 2022 from the homebuilding “Other assets” line item to the homebuilding “Senior notes” line item in the accompanying condensed consolidated balance sheets.

In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The standard will replace most existing revenue recognition guidance in GAAP when it becomes effective. In July 2015, the FASB delayed the standard’s effective date for one year. The standard is effective for the Company as of January 1, 2018. The standard permits the use of either the retrospective or cumulative effect transition method. The Company does not believe that the adoption of this standard will have a material effect on its consolidated financial statements and related disclosures.

In February 2015, FASB issued ASU 2015-02, Consolidation (Topic 810) – Amendments to the Consolidation Analysis. The standard changes the manner in which reporting entities evaluate consolidation requirements of certain legal entities. The standard became effective for the Company on January 1, 2016. The adoption of this standard did not have any effect on the Company’s consolidated financial statements and related disclosures.

In July 2015, FASB issued ASU 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory. The standard simplifies the subsequent measurement of inventory by requiring inventory to be measured at the lower of cost or net realizable value. The amendments in the standard do not apply to inventory that is measured using last-in, first-out (LIFO) or the retail inventory method. The standard is effective for the Company as of January 1, 2017. The amendments in the standard are to be applied prospectively. The Company does not believe that the adoption of this standard will have a material effect on its consolidated financial statements and related disclosures.

In February 2016, FASB issued ASU 2016-02, Leases (Topic 842), which requires lessees to recognize most leases on-balance sheet with a liability equal to the present value of lease payments over the lease term and a right-of-use asset for the right to use the underlying asset over the lease term. Lessees will recognize expenses on their income statements in a manner similar to current GAAP. The standard also requires additional disclosures of key information about leasing arrangements. The standard is effective for the Company as of January 1, 2019. The Company believes that the adoption of this standard will have a material effect on both assets and liabilities presented on the balance sheet, and is further evaluating the impact of its adoption.

In March 2016, FASB issued ASU 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. The standard simplifies several aspects of share-based payment accounting, including the recognition of income tax effects, statutory tax withholding requirements and accounting for forfeitures. The standard is effective for the Company as of January 1, 2017. The Company believes that the standard will likely have a material effect on net income and earnings per share presented on its consolidated financial statements resulting from the recognition of excess tax benefit from equity plan activity. Additionally, the Company has elected to record forfeitures based on actual results.

In June 2016, FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326), which significantly changes the way impairment of financial assets is recognized. The standard will require immediate recognition of estimated credit losses expected to occur over the remaining life of many financial assets, which will generally result in earlier recognition of allowances for credit losses on loans and other financial instruments. The standard’s provisions will be applied as a cumulative-effect adjustment to beginning retained earnings as of the effective date. The standard is effective for the Company as of January 1, 2020. Early adoption is permitted for annual and interim periods beginning January 1, 2019. The Company is currently evaluating the effect that the standard will have on its consolidated financial statements and related disclosures.

In August 2016, FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. The objective of the standard is to address the diversity in practice of how certain cash receipts and payments are presented on the statement of cash flows. The standard requires that the guidance be applied retrospectively in the first interim and annual periods in which an entity adopts the guidance. The standard is effective for the Company as of January 1, 2018, and early adoption is permitted. The Company is currently evaluating the effect that the standard will have on its consolidated statements of cash flows and related disclosures.

In November 2016, FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230), Restricted Cash. The amendments in the standard require that the statement of cash flows explain the change during the period in the total of cash, cash equivalents and restricted cash or restricted cash equivalents. As a result, restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total cash amounts shown on the statement of cash flows. The standard is effective for the Company as of January 1, 2018, and early adoption is permitted. The Company does not believe that the adoption of this standard will have a material effect on its consolidated statements of cash flows and related disclosures.

In January 2017, FASB issued ASU 2017-04, Intangibles – Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment. The standard’s objective is to simplify the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test. Under the amendments in the standard, an entity would perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. If the carrying amount of a reporting unit exceeds its fair value, an impairment charge would then be recognized, not to exceed the amount of goodwill allocated to that reporting unit. The standard is effective for the Company on January 1, 2020, and early adoption is permitted. The Company does not believe that the adoption of this standard will have a material effect on its consolidated financial statements and related disclosures.

Segment Information, Nature of Operations, and Certain Concentrations

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Segment Information, Nature of Operations, and Certain Concentrations

2.	Segment Information, Nature of Operations, and Certain Concentrations

NVR’s homebuilding operations primarily construct and sell single-family detached homes, townhomes and condominium buildings under three trade names: Ryan Homes, NVHomes and Heartland Homes. The Ryan Homes product is marketed primarily to first-time and first-time move-up buyers. Ryan Homes operates in twenty-nine metropolitan areas located in Maryland, Virginia, Washington, D.C., West Virginia, Pennsylvania, New York, North Carolina, South Carolina, Florida, Ohio, New Jersey, Delaware, Indiana, Illinois and Tennessee. The NVHomes and Heartland Homes products are marketed primarily to move-up and upscale buyers. NVHomes operates in Delaware and the Washington, D.C., Baltimore, MD, Philadelphia, PA and Raleigh, NC metropolitan areas. Heartland Homes operates in the Pittsburgh, PA metropolitan area. NVR derived approximately 30% and 13% of its 2016 homebuilding revenues from the Washington, D.C. and Baltimore, MD metropolitan areas, respectively.

NVR’s mortgage banking segment is a regional mortgage banking operation. Substantially all of the mortgage banking segment’s loan closing activity is for NVR’s homebuilding customers. NVR’s mortgage banking business generates revenues primarily from origination fees, gains on sales of loans, and title fees. A substantial portion of the Company’s mortgage operations is conducted in the Washington, D.C. and Baltimore, MD metropolitan areas.

The following disclosure includes four homebuilding reportable segments that aggregate geographically the Company’s homebuilding operating segments, and the mortgage banking operations presented as a single reportable segment. The homebuilding reportable segments are comprised of operating divisions in the following geographic areas:

Mid Atlantic:		Maryland, Virginia, West Virginia, Delaware and Washington, D.C.
North East:		New Jersey and Eastern Pennsylvania
Mid East:		New York, Ohio, Western Pennsylvania, Indiana and Illinois
South East:		North Carolina, South Carolina, Florida and Tennessee

Homebuilding profit before tax includes all revenues and income generated from the sale of homes, less the cost of homes sold, selling, general and administrative expenses, and a corporate capital allocation charge. The corporate capital allocation charge is eliminated in consolidation and is based on the segment’s average net assets employed. The corporate capital allocation charged to the operating segment allows the Chief Operating Decision Maker (“CODM”) to determine whether the operating segment’s results are providing the desired rate of return after covering the Company’s cost of capital. In addition, certain assets including goodwill and intangible assets, and consolidation adjustments as discussed further below, are not allocated to the operating segments as those assets are neither included in the operating segment’s corporate capital allocation charge, nor in the CODM’s evaluation of the operating segment’s performance. The Company records charges on contract land deposits when it is determined that it is probable that recovery of the deposit is impaired. For segment reporting purposes, impairments on contract land deposits are charged to the operating segment upon the determination to terminate a Lot Purchase Agreement with the developer, or to restructure a Lot Purchase Agreement resulting in the forfeiture of the deposit. Mortgage banking profit before tax consists of revenues generated from mortgage financing, title insurance and closing services, less the costs of such services and general and administrative costs. Mortgage banking operations are not charged a corporate capital allocation charge.

In addition to the corporate capital allocation and contract land deposit impairments discussed above, the other reconciling items between segment profit and consolidated profit before tax include unallocated corporate overhead (including all management incentive compensation), equity-based compensation expense, consolidation adjustments and external corporate interest expense. NVR’s overhead functions, such as accounting, treasury and human resources are centrally performed and the costs are not allocated to the Company’s operating segments. Consolidation adjustments consist of such items necessary to convert the reportable segments’ results, which are predominantly maintained on a cash basis, to a full accrual basis for external financial statement presentation purposes, and are not allocated to the Company’s operating segments. External corporate interest expense primarily consists of interest charges on the Company’s 3.95% Senior Notes due 2022 (the “Senior Notes”) and is not charged to the operating segments because the charges are included in the corporate capital allocation discussed above.

Following are tables presenting segment revenues, profit before taxes, assets, interest income, interest expense, depreciation and amortization and expenditures for property and equipment, with reconciliations to the amounts reported for the consolidated enterprise, where applicable:

	Year Ended December 31,
	2016		2015		2014
Revenues:
Homebuilding Mid Atlantic	$	3,319,776	$	3,022,789	$	2,617,108
Homebuilding North East		462,385		432,145		376,862
Homebuilding Mid East		1,192,472		1,014,920		892,513
Homebuilding South East		734,590		595,346		488,576
Mortgage Banking		113,321		93,808		69,509
Consolidated revenues	$	5,822,544	$	5,159,008	$	4,444,568

	Year Ended December 31,
	2016			2015			2014
Profit before taxes:
Homebuilding Mid Atlantic	$	301,173		$	322,829		$	271,965
Homebuilding North East		21,947			37,914			33,390
Homebuilding Mid East		121,166			86,336			47,538
Homebuilding South East		71,098			57,384			37,525
Mortgage Banking		63,711			51,236			30,388
Total segment profit		579,095			555,699			420,806
Reconciling items:
Contract land deposit reserve adjustment (1)		10,933			13,805			3,612
Equity-based compensation expense		(43,598	)		(54,091	)		(63,227	)
Corporate capital allocation (2)		189,992			171,170			152,140
Unallocated corporate overhead		(89,376	)		(83,124	)		(61,108	)
Consolidation adjustments and other		35,204			22,622			23,867
Corporate interest expense		(20,553	)		(22,869	)		(22,544	)
Reconciling items sub-total		82,602			47,513			32,740
Consolidated profit before taxes	$	661,697		$	603,212		$	453,546

	As of December 31,
	2016			2015
Assets:
Homebuilding Mid Atlantic	$	1,054,779		$	994,804
Homebuilding North East		126,720			133,106
Homebuilding Mid East		222,736			220,094
Homebuilding South East		214,225			175,572
Mortgage Banking		403,250			372,203
Total segment assets		2,021,710			1,895,779
Reconciling items:
Consolidated variable interest entity		1,251			1,749
Cash and cash equivalents		375,748			397,522
Deferred taxes		170,652			161,805
Intangible assets and goodwill		51,526			52,909
Contract land deposit reserve		(31,306	)		(42,239	)
Consolidation adjustments and other		54,362			44,193
Reconciling items sub-total		622,233			615,939
Consolidated assets	$	2,643,943		$	2,511,718

	Year Ended December 31,
	2016		2015		2014
Interest income:
Mortgage Banking	$	7,569	$	6,485	$	4,940
Total segment interest income		7,569		6,485		4,940
Other unallocated interest income		1,111		1,211		1,311
Consolidated interest income	$	8,680	$	7,696	$	6,251

	Year Ended December 31,
	2016			2015			2014
Interest expense:
Homebuilding Mid Atlantic	$	119,808		$	107,748		$	96,364
Homebuilding North East		18,141			16,991			12,114
Homebuilding Mid East		28,307			27,263			26,300
Homebuilding South East		23,804			19,217			17,409
Mortgage Banking		1,086			641			549
Total segment interest expense		191,146			171,860			152,736
Corporate capital allocation		(189,992	)		(171,170	)		(152,140	)
Senior Notes and other interest		20,553			22,869			22,544
Consolidated interest expense	$	21,707		$	23,559		$	23,140

	Year Ended December 31,
	2016		2015		2014
Depreciation and amortization:
Homebuilding Mid Atlantic	$	8,089	$	7,876	$	6,489
Homebuilding North East		2,053		1,571		1,208
Homebuilding Mid East		3,748		4,003		3,212
Homebuilding South East		2,276		2,191		1,715
Mortgage Banking		1,117		1,136		1,089
Total segment depreciation and amortization		17,283		16,777		13,713
Unallocated corporate		4,986		4,757		3,901
Consolidated depreciation and amortization	$	22,269	$	21,534	$	17,614

	Year Ended December 31,
	2016		2015		2014
Expenditures for property and equipment:
Homebuilding Mid Atlantic	$	8,838	$	8,287	$	9,047
Homebuilding North East		3,423		2,220		2,311
Homebuilding Mid East		4,027		3,774		6,982
Homebuilding South East		3,594		1,753		3,472
Mortgage Banking		726		265		2,580
Total segment expenditures for property and equipment		20,608		16,299		24,392
Unallocated corporate		1,761		1,978		7,280
Consolidated expenditures for property and equipment	$	22,369	$	18,277	$	31,672

(1)	This item represents changes to the contract land deposit impairment reserve, which are not allocated to the reportable segments.

(2)	This item represents the elimination of the corporate capital allocation charge included in the respective homebuilding reportable segments. The corporate capital allocation charge is based on the segment’s monthly average asset balance, and was as follows for the years presented:

	Year Ended December 31,
	2016		2015		2014
Corporate capital allocation charge:
Homebuilding Mid Atlantic	$	119,758	$	107,705	$	96,328
Homebuilding North East		18,132		16,987		12,107
Homebuilding Mid East		28,303		27,263		26,299
Homebuilding South East		23,799		19,215		17,406
Total corporate capital allocation charge	$	189,992	$	171,170	$	152,140

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 29
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

+ Details

Variable Interest Entities

12 Months Ended

Dec. 31, 2016

Variable Interest Entity Reporting Entity Involvement Maximum Loss Exposure [Abstract]

Variable Interest Entities

3.	Variable Interest Entities

Lot Purchase Agreements

NVR generally does not engage in the land development business. Instead, the Company typically acquires finished building lots at market prices from various development entities under Lot Purchase Agreements. The Lot Purchase Agreements require deposits that may be forfeited if NVR fails to perform under the Lot Purchase Agreements. The deposits required under the Lot Purchase Agreements are in the form of cash or letters of credit in varying amounts, and typically range up to 10% of the aggregate purchase price of the finished lots.

NVR believes this lot acquisition strategy reduces the financial requirements and risks associated with direct land ownership and land development. NVR may, at its option, choose for any reason and at any time not to perform under these Lot Purchase Agreements by delivering notice of its intent not to acquire the finished lots under contract. NVR’s sole legal obligation and economic loss for failure to perform under these Lot Purchase Agreements is limited to the amount of the deposit pursuant to the liquidated damage provisions contained within the Lot Purchase Agreements. In other words, if NVR does not perform under a Lot Purchase Agreement, NVR loses only its deposit. None of the creditors of any of the development entities with which NVR enters Lot Purchase Agreements have recourse to the general credit of NVR. NVR generally does not have any specific performance obligations to purchase a certain number or any of the lots, nor does NVR guarantee completion of the development by the developer or guarantee any of the developers’ financial or other liabilities.

NVR is not involved in the design or creation of the development entities from which the Company purchases lots under Lot Purchase Agreements. The developer’s equity holders have the power to direct 100% of the operating activities of the development entity. NVR has no voting rights in any of the development entities. The sole purpose of the development entity’s activities is to generate positive cash flow returns for the equity holders. Further, NVR does not share in any of the profit or loss generated by the project’s development. The profits and losses are passed directly to the developer’s equity holders.

The deposit placed by NVR pursuant to the Lot Purchase Agreement is deemed to be a variable interest in the respective development entities. Those development entities are deemed to be variable interest entities (“VIE”). Therefore, the development entities with which NVR enters into Lot Purchase Agreements, including the joint venture limited liability corporations, discussed below, are evaluated for possible consolidation by NVR. An enterprise must consolidate a VIE when that enterprise has a controlling financial interest in the VIE. An enterprise is deemed to have a controlling financial interest if it has i) the power to direct the activities of a VIE that most significantly impact the entity’s economic performance, and ii) the obligation to absorb losses of the VIE that could be significant to the VIE or the rights to receive benefits from the VIE that could be significant to the VIE.

NVR believes the activities that most significantly impact a development entity’s economic performance are the operating activities of the entity. Unless and until a development entity completes finished building lots through the development process to be able to sell, the process of which the development entity’s equity investors bear the full risk, the entity does not earn any revenues. The operating development activities are managed solely by the development entity’s equity investors.

The development entities with which NVR contracts to buy finished lots typically select the respective projects, obtain the necessary zoning approvals, obtain the financing required with no support or guarantees from NVR, select who will purchase the finished lots and at what price, and manage the completion of the infrastructure improvements, all for the purpose of generating a cash flow return to the development entity’s equity holders and all independent of NVR. The Company possesses no more than limited protective legal rights through the Lot Purchase Agreement in the specific finished lots that it is purchasing, and NVR possesses no participative rights in the development entities. Accordingly, NVR does not have the power to direct the activities of a developer that most significantly impact the developer’s economic performance. For this reason, NVR has concluded that it is not the primary beneficiary of the development entities with which the Company enters into Lot Purchase Agreements, and therefore NVR does not consolidate any of these VIEs.

As of December 31, 2016, NVR controlled approximately 73,200 lots under Lot Purchase Agreements with third parties through deposits in cash and letters of credit totaling approximately $396,200 and $2,400, respectively. As noted above, NVR’s sole legal obligation and economic loss for failure to perform under these Lot Purchase Agreements is limited to the amount of the deposit pursuant to the liquidated damage provisions contained in the Lot Purchase Agreements and, in very limited circumstances, specific performance obligations.

In addition, NVR has certain properties under contract with land owners that are expected to yield approximately 9,600 lots, which are not included in the number of total lots controlled. Some of these properties may require rezoning or other approvals to achieve the expected yield. These properties are controlled with deposits in cash totaling approximately $14,900 as of December 31, 2016, of which approximately $1,400 is refundable if NVR does not perform under the contract. NVR generally expects to assign the raw land contracts to a land developer and simultaneously enter into a Lot Purchase Agreement with the assignee if the project is determined to be feasible.

NVR’s total risk of loss related to contract land deposits as of December 31, 2016 and 2015 was as follows:

	December 31,
	2016			2015
Contract land deposits	$	411,150		$	385,534
Loss reserve on contract land deposits		(31,306	)		(42,239	)
Contract land deposits, net		379,844			343,295
Contingent obligations in the form of letters of credit		2,379			3,302
Contingent specific performance obligations (1)		1,505			1,505
Total risk of loss	$	383,728		$	348,102

(1)	As of both December 31, 2016 and 2015, the Company was committed to purchase 10 finished lots under specific performance obligations.

Joint Ventures

12 Months Ended

Dec. 31, 2016

Equity Method Investments And Joint Ventures [Abstract]

Joint Ventures

4.	Joint Ventures

On a limited basis, NVR obtains finished lots using joint venture limited liability corporations (“JVs”). The JVs are typically structured such that NVR is a non-controlling member and is at risk only for the amount the Company has invested, or committed to invest, in addition to any deposits placed under Lot Purchase Agreements with the joint venture. NVR is not a borrower, guarantor or obligor on any debt of the JVs, as applicable. The Company enters into a standard Lot Purchase Agreement to purchase lots from these JVs, and as a result has a variable interest in these JVs.

At December 31, 2016, the Company had an aggregate investment totaling approximately $49,400 in six JVs that are expected to produce approximately 7,400 finished lots, of which approximately 4,200 lots were controlled by the Company and the remaining approximately 3,200 lots were either under contract with unrelated parties or not currently not under contract. In addition, NVR had additional funding commitments in the aggregate totaling $6,200 to three of the JVs at December 31, 2016. The Company has determined that it is not the primary beneficiary of five of the JVs because NVR and the other JV partner either share power or the other JV partner has the controlling financial interest. The aggregate investment in unconsolidated JVs was approximately $49,000 and $59,800 at December 31, 2016 and 2015, respectively, and is reported in the “Other assets” line item on the accompanying consolidated balance sheets. For the remaining JV, NVR has concluded that it is the primary beneficiary because the Company has the controlling financial interest in the JV.

The condensed balance sheets of the consolidated JV at December 31, 2016 and 2015 were as follows:

	December 31,
	2016		2015
Assets:
Cash	$	1,214	$	990
Other assets		37		379
Land under development		—		380
Total assets	$	1,251	$	1,749

Liabilities and equity:
Accrued expenses		550		567
Equity		701		1,182
Total liabilities and equity	$	1,251	$	1,749

At December 31, 2015, the Company had an aggregate investment totaling approximately $60,500 in six JVs that were expected to produce approximately 8,000 finished lots, of which approximately 4,700 lots were controlled by the Company and the remaining approximately 3,300 lots were either under contract with unrelated parties or not currently not under contract. In addition, at December 31, 2015, NVR had additional funding commitments in the aggregate totaling $11,500 to three of the JVs.

The Company recognizes income from the JVs as a reduction to the lot cost of the lots purchased from the respective JVs when homes are settled and is based on expected total profitability and the total number of lots expected to be produced by the respective JVs. Distributions received from the unconsolidated JVs are allocated between return of capital and distributions of earnings based on the ratio of capital contributed by NVR to the total expected returns for the respective JVs, and are classified within the accompanying consolidated statements of cash flows as cash flows from investing activities and operating activities, respectively.

Land Under Development

12 Months Ended

Dec. 31, 2016

Real Estate [Abstract]

Land Under Development

5.	Land Under Development

On a limited basis, NVR directly acquires raw land parcels already zoned for its intended use to develop into finished lots. Land under development includes the land acquisition costs, direct improvement costs, capitalized interest where applicable, and real estate taxes.

As of December 31, 2016, NVR directly owned four separate raw parcels of land with a carrying value of $46,999 that it intends to develop into approximately 600 finished lots primarily for use in its homebuilding operations. The Company also has additional funding commitments of approximately $12,000 under a joint development agreement related to one parcel, a portion of which the Company expects will be offset by development credits of approximately $7,100. None of the raw parcels had any indicators of impairment as of December 31, 2016.

In February 2016, the Company purchased a land parcel which included both land under development and finished lots for approximately $150,000. In June 2016, the Company sold that land parcel to a developer for an amount which approximated NVR’s net investment in the property as of the sale date. In conjunction with the sale, the Company also entered into Lot Purchase Agreements with the developer for the option to purchase a portion of the finished lots expected to be developed from the parcel. Prior to the sale of the parcel, the Company sold 56 finished lots for approximately $16,800, which were under contract with unrelated parties.

As of December 31, 2015, NVR directly owned four separate raw parcels of land with a carrying value of $60,611 which were expected to produce approximately 980 finished lots.

Capitalized Interest

12 Months Ended

Dec. 31, 2016

Interest Costs Incurred Capitalized [Abstract]

Capitalized Interest

6.	Capitalized Interest

The Company capitalizes interest costs to land under development during the active development of finished lots. In addition, the Company capitalizes interest costs to its joint venture investments while the investments are considered qualified assets pursuant to ASC 835-20, Interest. Capitalized interest is transferred to sold or unsold inventory as the development of finished lots is completed, then charged to cost of sales upon the Company’s settlement of homes and the respective lots. Interest incurred in excess of the interest capitalizable based on the level of qualified assets is expensed in the period incurred. NVR’s interest costs incurred, capitalized, expensed and charged to cost of sales during the years ended December 31, 2016, 2015 and 2014 was as follows:

	December 31,
	2016			2015			2014
Interest capitalized, beginning of year	$	4,434		$	4,072		$	3,294
Interest incurred		25,951			25,155			24,994
Interest charged to interest expense		(21,707	)		(23,559	)		(23,140	)
Interest charged to cost of sales		(3,572	)		(1,234	)		(1,076	)
Interest capitalized, end of year	$	5,106		$	4,434		$	4,072

Related Party Transactions

12 Months Ended

Dec. 31, 2016

Related Party Transactions

7.	Related Party Transactions

During the year ended December 31, 2016, NVR entered into Lot Purchase Agreements to purchase finished building lots for a total purchase price of approximately $65,200 with Elm Street Development, Inc. (“Elm Street”), which is controlled by one of the Company’s directors, William Moran. The independent members of the Company’s Board of Directors approved these transactions. During 2016, 2015 and 2014, NVR purchased developed lots at market prices from Elm Street for approximately $44,500, $41,200 and $50,100, respectively. The Company also continues to control a parcel of raw land expected to yield approximately 2,400 finished lots through a joint venture entered into with Elm Street during 2009. NVR did not make any capital contributions to that joint venture in 2016 or 2015. Further, during 2016, 2015 and 2014, the Company paid Elm Street $143 per year to manage the development of a property that the Company purchased from Elm Street in 2010.

Property, Plant and Equipment ("PP&E")

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property, Plant and Equipment ("PP&E")

8.	Property, Plant and Equipment (“PP&E”)

	December 31,
	2016			2015
Homebuilding:
Office facilities and other	$	33,352		$	31,696
Model home furniture and fixtures		34,924			33,041
Production facilities		58,068			51,636
Gross Homebuilding PP&E		126,344			116,373
Less: accumulated depreciation		(80,429	)		(71,722	)
Net Homebuilding PP&E	$	45,915		$	44,651
Mortgage Banking:
Office facilities and other	$	11,379		$	10,629
Less: accumulated depreciation		(6,476	)		(5,316	)
Net Mortgage Banking PP&E	$	4,903		$	5,313

Debt

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Debt

Senior Notes

On September 10, 2012, NVR completed an offering for $600,000 of Senior Notes under a shelf registration statement filed on September 5, 2012 with the Securities and Exchange Commission (the “SEC”). The Senior Notes were issued at a discount to yield 3.97% and have been reflected net of the unamortized discount in the accompanying consolidated balance sheet. The offering of the Senior Notes resulted in aggregate net proceeds of approximately $593,900, after deducting underwriting discounts and other offering expenses. The Senior Notes mature on September 15, 2022 and bear interest at 3.95%, payable semi-annually in arrears on March 15 and September 15. Additionally, following the Company’s adoption of ASU 2015-03 as of January 1, 2016, the Senior Notes have been reflected net of unamortized debt issuance costs of $2,904 and $3,413 as of December 31, 2016 and 2015, respectively.

The Senior Notes are senior unsecured obligations and rank equally in right of payment with any of NVR’s existing and future unsecured senior indebtedness, will rank senior in right of payment to any of NVR’s future indebtedness that is by its terms expressly subordinated to the Senior Notes and will be effectively subordinated to any of NVR’s existing and future secured indebtedness to the extent of the value of the collateral securing such indebtedness. The indenture governing the Senior Notes has, among other items, and subject to certain exceptions, covenants that restrict the Company’s ability to create, incur, assume or guarantee secured debt, enter into sale and leaseback transactions and conditions related to mergers and/or the sale of assets.

Credit Agreement

On July 15, 2016, NVR entered into an unsecured Credit Agreement (the “Credit Agreement”) with Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer, Merrill Lynch, Pierce, Fenner & Smith Incorporated as Sole Lead Arranger and Sole Book Runner, and the other lenders party thereto, which provides for aggregate revolving loan commitments of $200,000 (the “Facility”). Proceeds of the borrowings under the Facility will be used for working capital and general corporate purposes. Under the Credit Agreement, the Company may request increases of up to $300,000 to the Facility in the form of revolving loan commitments or term loans to the extent that new or existing lenders agree to provide additional revolving loan or term loan commitments. The Credit Agreement provides for a $100,000 sublimit for the issuance of letters of credit of which approximately $8,300 was outstanding at December 31, 2016, and a $25,000 sublimit for a swing line commitment. Borrowings under the Credit Agreement generally bear interest for Base Rate Loans at a Base Rate equal to the highest of (i) a Federal Funds Rate plus one-half of one percent, (ii) Bank of America’s publicly announced “prime rate,” and (iii) the Eurodollar Rate plus one percent, plus the Applicable Rate which is based on the Company’s debt rating, or for Eurodollar Rate Loans, at the Eurodollar Rate equal to LIBOR plus the Applicable Rate.

The Credit Agreement contains various representations and affirmative and negative covenants that are generally customary for credit facilities of this type. Such covenants include, among others, the following financial maintenance covenants: (i) minimum consolidated tangible net worth, (ii) minimum interest coverage ratio or minimum liquidity and (iii) a maximum leverage ratio. The negative covenants include, among others, certain limitations on liens, investments and fundamental changes. The Credit Agreement termination date is July 15, 2021. The Company was in compliance with all covenants under the Credit Agreement at December 31, 2016. There was no debt outstanding under the Facility at December 31, 2016.

Repurchase Agreement

On July 27, 2016, NVRM entered into the Eighth Amendment (the “Amendment”) to its Amended and Restated Master Repurchase Agreement dated August 2, 2011 with U.S. Bank National Association (as amended by the Amendment and seven earlier amendments, the “Repurchase Agreement”). The purpose of the Repurchase Agreement is to finance the origination of mortgage loans by NVRM. The Repurchase Agreement provides for loan purchases up to $150,000, subject to certain sub limits, and provides for an incremental commitment pursuant to which NVRM may from time to time request increases in the total commitment available under the Repurchase Agreement by up to $50,000 in the aggregate. Advances under the Repurchase Agreement carry a Pricing Rate based on the LIBOR Rate plus the LIBOR Margin, as determined under the Repurchase Agreement, provided that the Pricing Rate shall not be less than 2.25%. The Pricing Rate at December 31, 2016 was 3.06%. There are several restrictions on purchased loans, including that they cannot be sold to others, they cannot be pledged to anyone other than the agent, and they cannot support any other borrowing or repurchase agreement. Amounts outstanding under the Repurchase Agreement are collateralized by the Company’s mortgage loans held for sale. At December 31, 2016, there were no borrowing base limitations reducing the amount available under the Repurchase Agreement. As of both December 31, 2016 and 2015, there was no debt outstanding under the Repurchase Agreement. The Repurchase Agreement expires on July 26, 2017.

The Repurchase Agreement contains various affirmative and negative covenants. The negative covenants include, among others, certain limitations on transactions involving acquisitions, mergers, the incurrence of debt, sale of assets and creation of liens upon any of its Mortgage Notes. Additional covenants include (i) a tangible net worth requirement, (ii) a minimum liquidity requirement, (iii) a minimum net income requirement, and (iv) a maximum leverage ratio requirement. The Company was in compliance with all covenants under the Repurchase Agreement at December 31, 2016.

Common Stock

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Common Stock

10.	Common Stock

There were approximately 3,693 and 3,891 common shares outstanding at December 31, 2016 and 2015, respectively. The Company made the following share repurchases during the years indicated:

	Year Ended December 31,
	2016		2015		2014
Aggregate purchase price	$	455,351	$	431,367	$	567,544
Number of shares repurchased		280		290		508

The Company issues shares from the treasury account for all equity plan activity. The Company issued 83, 131 and 123 such shares during 2016, 2015 and 2014, respectively.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.E)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(31))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(30))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656

Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

+ Details

Income Taxes

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Income Taxes

11.	Income Taxes

The provision for income taxes consists of the following:

	Year Ended December 31,
		2016			2015		2014
Current:
Federal	$	209,454		$	180,895	$	148,221
State		38,095			36,142		28,881
Deferred:
Federal		(9,230	)		2,681		(4,451	)
State		(1,884	)		567		(735	)
	$	236,435		$	220,285	$	171,916

In addition to amounts applicable to income before taxes, the following income tax benefits were recorded in shareholders’ equity:

Year Ended December 31,

2016

2015

2014

Income tax benefits arising from compensation expense for

tax purposes in excess of amounts recognized for financial

statement purposes

13,661

23,311

9,437

Deferred income taxes on NVR’s consolidated balance sheets were comprised of the following:

	December 31,
	2016		2015
Deferred tax assets:
Other accrued expenses and contract land deposit reserve	$	76,498	$	77,781
Deferred compensation		7,075		7,280
Equity-based compensation expense		55,077		45,361
Inventory		13,514		12,722
Unrecognized tax benefit		23,954		24,740
Other		10,106		9,391
Total deferred tax assets		186,224		177,275
Less: deferred tax liabilities		5,414		6,489
Net deferred tax position	$	180,810	$	170,786

Deferred tax assets arise principally as a result of various accruals required for financial reporting purposes and equity-based compensation expense, which are not currently deductible for tax return purposes.

Management believes that the Company will have sufficient available carry-backs and future taxable income to make it more likely than not that the net deferred tax assets will be realized. Federal taxable income is estimated to be approximately $575,684 for the year ended December 31, 2016, and was $471,512 for the year ended December 31, 2015.

A reconciliation of income tax expense in the accompanying consolidated statements of income to the amount computed by applying the statutory federal income tax rate of 35% to income before taxes is as follows:

	Year Ended December 31,
	2016			2015			2014
Income taxes computed at the federal statutory rate	$	231,595		$	211,124		$	158,741
State income taxes, net of federal income tax benefit		23,738			23,919			18,800
Other, net (1)		(18,898	)		(14,758	)		(5,625	)
	$	236,435		$	220,285		$	171,916

(1)

Primarily attributable to tax benefits from the domestic production activities deduction.

The Company’s effective tax rate in 2016, 2015 and 2014 was 35.73%, 36.52% and 37.90%, respectively. During 2014, the Company recognized income tax expense of approximately $7,000 due to the reversal of certain previously recognized tax deductions.

The Company files a consolidated U.S. federal income tax return, as well as state and local tax returns in all jurisdictions where the Company maintains operations. With few exceptions, the Company is no longer subject to income tax examinations by tax authorities for years prior to 2013.

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	Year Ended December 31,
	2016			2015
Balance at beginning of year	$	46,591		$	46,004
Additions based on tax positions related to the current year		4,440			3,897
Reductions for tax positions of prior years		(4,921	)		(3,310	)
Settlements		—			—
Balance at end of year	$	46,110		$	46,591

If recognized, the total amount of unrecognized tax benefits that would affect the effective tax rate (net of the federal tax benefit) is $29,971 as of December 31, 2016.

The Company recognizes interest related to unrecognized tax benefits as a component of income tax expense. For the year ended December 31, 2016, the Company recognized a net reversal of accrued interest on unrecognized tax benefits in the amount of $1,582. For the year ended December 31, 2015, the Company recognized a net addition of accrued interest on unrecognized tax benefits in the amount of $125. For the year ended December 31, 2014, the Company had a net reversal to accrued interest on unrecognized tax benefits in the amount of $184. As of December 31, 2016 and 2015, the Company had a total of $19,639 and $21,221, respectively, of accrued interest on unrecognized tax benefits which are included in “Accrued expenses and other liabilities” on the accompanying consolidated balance sheets. Based on its historical experience in dealing with various taxing authorities, the Company has found that it is the administrative practice of these authorities to not seek penalties from the Company for the tax positions it has taken on its returns, related to its unrecognized tax benefits. Therefore, the Company does not accrue penalties for the positions in which it has an unrecognized tax benefit. However, if such penalties were to be accrued, they would be recorded as a component of income tax expense.

The Company believes that within the next 12 months, it is reasonably possible that the unrecognized tax benefits as of December 31, 2016 will be reduced by approximately $10,614 due to statute expiration and effectively settled positions in various state jurisdictions. The Company is currently under audit by the states of New Jersey and North Carolina.

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans

12.	Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans

Equity-Based Compensation Plans

NVR’s equity-based compensation plans provide for the granting of non-qualified stock options to purchase shares of NVR common stock (“Options”) and restricted share units (“RSUs”) to key management employees, including executive officers and Board members, of the Company. The exercise price of Options granted is equal to the closing price of the Company’s common stock on the New York Stock Exchange (the “NYSE”) on the day prior to the date of grant, and RSUs are issued at a $0 exercise price. Options are granted for a ten-year term and typically vest in separate tranches over periods of 3 to 6 years. The vesting for certain Options is contingent solely on continued employment or service as a Director, while vesting for other Options is contingent upon both continued employment or service as a Director and the achievement of a performance metric as discussed further in the summary description of the 2014 Equity Incentive Plan below. RSUs generally vest in separate tranches over periods of 2 to 4 years, based solely on continued employment or continued service as a Director.

The following table provides a summary of each of the Company’s equity-based compensation plans for any plan with grants outstanding at December 31, 2016:

Equity-Based Compensation Plans	Shares Authorized		Options/RSUs Outstanding		Shares Available to Issue
1998 Management Long-Term Stock Option Plan		1,000		6		—
1998 Directors' Long-Term Stock Option Plan		150		5		—
2000 Broadly-Based Stock Option Plan		2,000		118		—
2010 Equity Incentive Plan (1)		700		282		44
2014 Equity Incentive Plan (2)		950		681		269

(1)

During 2010, the Company’s shareholders approved the 2010 Equity Incentive Plan (the “2010 Plan”). The 2010 Plan authorizes the Company to issue Options and RSUs to key management employees, including executive officers and Board members. Of the 700 aggregate shares available to issue, up to 240 may be granted in the form of RSUs. There were 266 Options and 16 RSUs outstanding as of December 31, 2016. Of the 44 shares available to be issued under the 2010 Plan, 38 may be granted as RSUs.

(2)

During 2014, the Company’s shareholders approved the 2014 Equity Incentive Plan (the “2014 Plan”). The 2014 Plan authorizes the Company to issue Options to key management employees, including executive officers and Board members. Option grants under the 2014 Plan are generally divided such that vesting for 50% of the Option grant is solely contingent upon continued employment or continued service as a Director, while vesting for the remaining 50% of the Option grant is contingent upon both continued employment or service as a Director and the achievement of a performance metric. The performance metric is based on the Company’s return on capital performance during a specified three year period based on the date of Option grant, with the initial performance period being 2014 through 2016. Options granted under the 2014 Plan vest annually over four years in 25% increments beginning on December 31, 2016, or later based on the date of grant.

During 2016, the Company issued 64 Options under the 2014 Plan. Substantially all of the Options granted in 2016 will vest annually over four years in 25% increments beginning on December 31, 2018. Vesting for 37 of the Options granted is contingent both upon continued employment or continued service as a director and the Company’s return on capital performance. Vesting for the other 27 Options granted under the 2014 Plan is contingent solely upon continued employment or continued service as a director.

The Company also issued 10 Options under the 2010 Plan during 2016. All of the 2010 Plan Options granted during 2016 will vest annually over four years in 25% increments beginning on December 31, 2018. The vesting for the Options granted under the 2010 Plan is based solely on continued employment.

The following table provides additional information relative to NVR’s equity-based compensation plans for the year ended December 31, 2016:

	Shares			Weighted Avg. Per Share Exercise Price		Weighted Avg. Remaining Contract Life (years)		Aggregate Intrinsic Value
Stock Options
Outstanding at December 31, 2015		1,096		$	998.88
Granted		74			1,658.88
Exercised		(50	)		768.06
Forfeited		(44	)		1,154.56
Outstanding at December 31, 2016		1,076		$	1,048.38		6.6	$	667,937
Exercisable at December 31, 2016		423		$	875.22		5.3	$	335,584

RSUs
Outstanding at December 31, 2015		51
Granted		—
Vested		(33	)
Forfeited		(2	)
Outstanding at December 31, 2016		16						$	26,622
Vested, but not issued at December 31, 2016		6						$	9,997

To estimate the grant-date fair value of its Options, the Company uses the Black-Scholes option-pricing model (the “Pricing Model”). The Pricing Model estimates the per share fair value of an option on its date of grant based on the following factors: the option’s exercise price; the price of the underlying stock on the date of grant; the estimated dividend yield; a risk-free interest rate; the estimated option term; and the expected volatility. For the risk-free interest rate, the Company uses U.S. Treasury STRIPS which mature at approximately the same time as the option’s expected holding term. For expected volatility, NVR has concluded that its historical volatility over the option’s expected holding term provides the most reasonable basis for this estimate. The fair value of the Options granted during 2016, 2015 and 2014 was estimated on the grant date using the Pricing Model, based on the following assumptions:

	2016		2015		2014
Estimated option life	5.27 years		5.17 years		5.16 years
Risk free interest rate (range)	0.86%-2.21%		1.04%-2.07%		1.06%-2.49%
Expected volatility (range)	15.91%-23.49%		17.00%-26.79%		18.26%-30.57%
Expected dividend rate		0.00%		0.00%		0.00%
Weighted average grant-date fair value per share of options granted	$	320.21	$	296.50	$	267.66

In accordance with ASC 718, Compensation – Stock Compensation, the fair value of the RSUs is measured as if they were vested and issued on the grant date. Additionally, under ASC 718, service-only restrictions on vesting of RSUs are not reflected in the fair value calculation at the grant date. As a result, the fair value of the RSUs was the closing price of the Company’s common stock on the day immediately preceding the date of grant. There were no RSUs granted during 2016.

Compensation cost for Options and RSUs is recognized on a straight-line basis over the requisite service period for the entire award (from the date of grant through the period of the last separately vesting portion of the grant). For the recognition of equity-based compensation, the RSUs are treated as a separate award from the Options. Additionally, the Options which are subject to a performance condition are treated as a separate award from the “service-only” Options, and compensation expense is recognized when it becomes probable that the stated performance target will be achieved. The Company currently believes that it is probable that the performance condition will be satisfied at the target level and is recognizing compensation expense related to such Options accordingly. Compensation cost is recognized within the income statement in the same expense line as the cash compensation paid to the respective employees.

ASC 718 also requires the Company to estimate forfeitures in calculating the expense related to equity-based compensation and requires that the compensation costs of equity-based awards be recognized net of estimated forfeitures. The impact on compensation costs due to changes in the expected forfeiture rate will be recognized in the period that they become known. In 2016, 2015 and 2014, the Company recognized $43,598, $54,091, and $63,227 in equity-based compensation costs, respectively, and approximately $17,000, $19,700, and $22,900 in tax benefit related to equity-based compensation costs, respectively.

As of December 31, 2016, the total unrecognized compensation cost for all outstanding Options and RSUs equaled approximately $128,700, net of estimated forfeitures. The unrecognized compensation cost will be recognized over each grant’s applicable vesting period with the latest vesting date being December 31, 2022. The weighted-average period over which the unrecognized compensation will be recorded is equal to approximately 2.1 years.

The Company settles Option exercises and vesting of RSUs by issuing shares of treasury stock. Shares are relieved from the treasury account based on the weighted average cost of treasury shares acquired. During the years ended December 31, 2016, 2015 and 2014, the Company issued 83, 131 and 123 shares, respectively, from the treasury account for Option exercises and vesting of RSUs. Information with respect to the vested RSUs and exercised Options is as follows:

	Year Ended December 31,
	2016		2015		2014
Aggregate exercise proceeds (1)	$	38,106	$	85,948	$	76,153
Aggregate intrinsic value on exercise dates	$	96,600	$	99,288	$	62,136

(1)	Aggregate exercise proceeds include the Option exercise price received in cash or the fair market value of NVR stock surrendered by the optionee in lieu of cash.

Profit Sharing Plans

NVR has a trustee-administered, profit sharing retirement plan (the “Profit Sharing Plan”) and an Employee Stock Ownership Plan (“ESOP”) covering substantially all employees. The Profit Sharing Plan and the ESOP provide for annual discretionary contributions in amounts as determined by the NVR Board of Directors. The combined plan contribution for the years ended December 31, 2016, 2015 and 2014 was approximately $16,700, $17,900 and $17,000, respectively. The ESOP purchased approximately 9 and 11 shares of NVR common stock in the open market for the 2016 and 2015 plan year contributions, respectively, using cash contributions provided by the Company. As of December 31, 2016, all shares held by the ESOP had been allocated to participants’ accounts. The 2016 plan year contribution was funded and fully allocated to participants in February 2017.

Deferred Compensation Plans

The Company has two deferred compensation plans (“Deferred Comp Plans”). The specific purpose of the Deferred Comp Plans is to i) establish a vehicle whereby named executive officers may defer the receipt of salary and bonus that otherwise would be nondeductible for Company tax purposes into a period where the Company would realize a tax deduction for the amounts paid, and ii) to enable certain employees who are subject to the Company’s stock holding requirements to acquire shares of the Company’s common stock on a pre-tax basis in order to more quickly meet, and maintain compliance with those stock holding requirements. Amounts deferred into the Deferred Comp Plans are invested in NVR common stock, held in a rabbi trust account, and are paid out in a fixed number of shares upon expiration of the deferral period.

The rabbi trust account held 109 shares of NVR common stock as of both December 31, 2016 and 2015. Shares held by the Deferred Comp Plans are treated as outstanding shares in the Company’s earnings per share calculation for each of the years ended December 31, 2016, 2015 and 2014.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Commitments and Contingent Liabilities

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingent Liabilities

13.	Commitments and Contingent Liabilities

NVR is committed under multiple non-cancelable operating leases involving office space, model homes, production facilities, automobiles and equipment. Future minimum lease payments under these operating leases as of December 31, 2016 are as follows:

Year Ending December 31,
2017	$	25,331
2018		19,544
2019		16,833
2020		13,785
2021		10,938
Thereafter		22,760
		109,191
Sublease income		(53	)
	$	109,138

Total rent expense incurred under operating leases was $45,843, $48,056 and $45,508 for the years ended December 31, 2016, 2015 and 2014, respectively.

The Company generally does not engage in the land development business. Instead, the Company typically acquires finished building lots at market prices from various development entities under Lot Purchase Agreements. The Lot Purchase Agreements require deposits that may be forfeited if the Company fails to perform under the agreement. The deposits required under the Lot Purchase Agreements are in the form of cash or letters of credit in varying amounts, and typically range up to 10% of the aggregate purchase price of the finished lots. The Company believes this lot acquisition strategy reduces the financial requirements and risks associated with direct land ownership and land development. The Company generally seeks to maintain control over a supply of lots believed to be suitable to meet its five-year business plan. At December 31, 2016, assuming that contractual development milestones are met and the Company exercises its option, the Company expects to place additional forfeitable deposits with land developers under existing Lot Purchase Agreements of approximately $94,600. The Company also has one specific performance contract pursuant to which the Company is committed to purchase 10 finished lots at an aggregate purchase price of approximately $1,505. Additionally, as of December 31, 2016, we had funding commitments totaling approximately $12,000 under a joint development agreement related to our land under development, a portion of which we expect will be offset by development credits of approximately $7,100.

During the ordinary course of operating the homebuilding and mortgage banking businesses, the Company is required to enter into bond or letter of credit arrangements with local municipalities, government agencies, or land developers to collateralize its obligations under various contracts. The Company had approximately $50,700 of contingent obligations under such agreements, including approximately $8,300 for letters of credit issued under the Credit Agreement as of December 31, 2016. The Company believes it will fulfill its obligations under the related contracts and does not anticipate any material losses under these bonds or letters of credit.

The following table reflects the changes in the Company’s warranty reserve (see Note 1 herein for further discussion of warranty/product liability reserves):

	Year Ended December 31,
	2016			2015			2014
Warranty reserve, beginning of year	$	87,407		$	94,060		$	101,507
Provision		50,787			47,003			51,668
Payments		(44,299	)		(53,656	)		(59,115	)
Warranty reserve, end of year	$	93,895		$	87,407		$	94,060

In June 2010, the Company received a Request for Information from the United States Environmental Protection Agency (“EPA”) pursuant to Section 308 of the Clean Water Act. The request sought information about storm water discharge practices in connection with homebuilding projects completed or underway by the Company in New York and New Jersey. The Company cooperated with this request, and provided information to the EPA. The Company was subsequently informed by the United States Department of Justice (“DOJ”) that the EPA forwarded the information on the matter to the DOJ, and the DOJ requested that the Company meet with the government to discuss the status of the case. Meetings took place in January 2012, August 2012 and November 2014 with representatives from both the EPA and DOJ. The Company has continued discussions with the EPA and DOJ and is presently engaged in settlement discussions with them. Any settlement is expected to include injunctive relief and payment of a civil penalty. Although there can be no assurance that a settlement will be reached, in 2015 the Company recorded a liability and corresponding expense associated with an estimated civil penalty amount.

The Company and its subsidiaries are also involved in various other litigation arising in the ordinary course of business. In the opinion of management, and based on advice of legal counsel, this litigation is not expected to have a material adverse effect on the financial position, results of operations or cash flows of the Company. Legal costs incurred in connection with outstanding litigation are expensed as incurred.

Fair Value

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Value

14.	Fair Value

GAAP assigns a fair value hierarchy to the inputs used to measure fair value. Level 1 inputs are quoted prices in active markets for identical assets and liabilities. Level 2 inputs are inputs other than quoted market prices that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs.

Financial Instruments

The estimated fair value of NVR’s Senior Notes as of December 31, 2016 was $612,000. The estimated fair value is based on recent market prices of similar transactions, which is classified as Level 2 within the fair value hierarchy. The carrying value was $596,455 at December 31, 2016. Except as otherwise noted below, NVR believes that insignificant differences exist between the carrying value and the fair value of its financial instruments, which consists primarily of cash equivalents, due to their short term nature.

Derivative Instruments and Mortgage Loans Held for Sale

In the normal course of business, NVRM, enters into contractual commitments to extend credit to buyers of single-family homes with fixed expiration dates. The commitments become effective when the borrowers “lock-in” a specified interest rate within time frames established by NVRM. All mortgagors are evaluated for credit worthiness prior to the extension of the commitment. Market risk arises if interest rates move adversely between the time of the “lock-in” of rates by the borrower and the sale date of the loan to a broker/dealer. To mitigate the effect of the interest rate risk inherent in providing rate lock commitments to borrowers, NVRM enters into optional or mandatory delivery forward sales contracts to sell whole loans and mortgage-backed securities to broker/dealers. The forward sales contracts lock in an interest rate and price for the sale of loans similar to the specific rate lock commitments. NVRM does not engage in speculative or trading derivative activities. Both the rate lock commitments to borrowers and the forward sale contracts to broker/dealers are undesignated derivatives and, accordingly, are marked to fair value through earnings. At December 31, 2016, there were contractual commitments to extend credit to borrowers aggregating $458,161 and open forward delivery contracts aggregating $738,637, which hedge both the rate lock loan commitments and closed loans held for sale.

The fair value of the Company’s rate lock commitments to borrowers and the related input levels includes, as applicable:

the assumed gain/loss of the expected resultant loan sale (Level 2);

ii)

the effects of interest rate movements between the date of the rate lock and the balance sheet date (Level 2); and

iii)

the value of the servicing rights associated with the loan (Level 2).

The assumed gain/loss considers the excess servicing to be received or buydown fees to be paid upon securitization of the loan. The excess servicing and buydown fees are calculated pursuant to contractual terms with investors. To calculate the effects of interest rate movements, NVRM utilizes applicable published mortgage-backed security prices, and multiplies the price movement between the rate lock date and the balance sheet date by the notional loan commitment amount. NVRM sells all of its loans on a servicing released basis, and receives a servicing released premium upon sale. Thus, the value of the servicing rights, which averaged 106 basis points of the loan amount as of December 31, 2016, is included in the fair value measurement and is based upon contractual terms with investors and varies depending on the loan type. NVRM assumes an approximate 13% fallout rate when measuring the fair value of rate lock commitments. Fallout is defined as locked loan commitments for which NVRM does not close a mortgage loan and is based on historical experience.

The fair value of NVRM’s forward sales contracts to broker/dealers solely considers the market price movement of the same type of security between the trade date and the balance sheet date (Level 2). The market price changes are multiplied by the notional amount of the forward sales contracts to measure the fair value.

Mortgage loans held for sale are recorded at the lower of cost or fair value, net of deferred origination costs, until sold. Fair value is measured using Level 2 inputs. The fair value of loans held for sale of $351,958 included on the accompanying consolidated balance sheet has been decreased by $5,954 from the aggregate principal balance of $357,912.

The undesignated derivative instruments are included on the accompanying consolidated balance sheet, as of December 31, 2016, as follows:

	Fair Value		Balance Sheet Location
Rate lock commitments:
Gross assets	$	5,403
Gross liabilities		3,327
Net rate lock commitments	$	2,076	NVRM - Other assets
Forward sales contracts:
Gross assets	$	9,148
Gross liabilities		1,084
Net forward sales contracts	$	8,064	NVRM - Other assets

The fair value measurement as of December 31, 2016 was as follows:

	Notional or Principal Amount		Assumed Gain/(Loss) From Loan Sale			Interest Rate Movement Effect			Servicing Rights Value		Security Price Change		Total Fair Value Measurement Gain/(Loss)
Rate lock commitments	$	458,161	$	(339	)	$	(1,682	)	$	4,097	$	—	$	2,076
Forward sales contracts	$	738,637		—			—			—		8,064		8,064
Mortgages held for sale	$	357,912		62			(9,962	)		3,946		—		(5,954	)
Total fair value measurement			$	(277	)	$	(11,644	)	$	8,043	$	8,064	$	4,186

For the year ended December 31, 2016, NVRM recorded a fair value adjustment to expense of $3,147. For the years ended December 31, 2015 and 2014, NVRM recorded a fair value adjustment to income of $3,508 and $3,305, respectively. Unrealized gains/losses from the change in the fair value measurements are included in earnings as a component of mortgage banking fees in the accompanying consolidated statements of income. The fair value measurement will be impacted in the future by the change in the value of the servicing rights, interest rate movements, security price fluctuations, and the volume and product mix of NVRM’s closed loans and locked loan commitments.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Quarterly Results (unaudited)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Results (unaudited)

16.	Quarterly Results (unaudited)

The following table sets forth unaudited selected financial data and operating information on a quarterly basis for the years ended December 31, 2016 and 2015.

	Year Ended December 31, 2016
	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter

Revenues – homebuilding operations	$	1,718,527	$	1,507,451	$	1,361,741	$	1,121,504
Gross profit – homebuilding operations	$	305,087	$	265,159	$	235,372	$	195,744
Mortgage banking fees	$	34,239	$	30,118	$	26,442	$	22,522
Net income	$	150,891	$	117,392	$	91,676	$	65,303
Diluted earnings per share	$	37.80	$	28.46	$	22.01	$	15.79
New orders (units)		3,645		3,477		4,324		4,137
Settlements (units)		4,419		3,922		3,581		3,006
Backlog, end of period (units)		6,884		7,658		8,103		7,360
Loans closed	$	1,201,164	$	1,055,163	$	942,407	$	753,840

	Year Ended December 31, 2015
	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter

Revenues – homebuilding operations	$	1,528,084	$	1,374,467	$	1,221,111	$	941,538
Gross profit – homebuilding operations	$	289,496	$	262,795	$	234,257	$	159,870
Mortgage banking fees	$	27,191	$	27,884	$	22,522	$	16,211
Net income	$	134,004	$	116,470	$	93,395	$	39,058
Diluted earnings per share	$	31.92	$	27.11	$	21.91	$	9.22
New orders (units)		3,100		3,258		3,796		3,926
Settlements (units)		4,010		3,607		3,175		2,534
Backlog, end of period (units)		6,229		7,139		7,488		6,867
Loans closed	$	1,042,440	$	951,872	$	859,403	$	638,627

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Principles of Consolidation

Use of Estimates in the Preparation of Financial Statements

Cash and Cash Equivalents

Homebuilding Inventory

Contract Land Deposits

Land Under Development

Property, Plant, and Equipment

Intangible Assets

Warranty/Product Liability Accruals

Mortgage Loans Held for Sale, Derivatives and Hedging Activities

Mortgage loans held for sale are carried at the lower of cost or fair value, net of deferred origination costs, until sold.

Earnings Per Share

Earnings per Share

The following weighted average shares and share equivalents were used to calculate basic and diluted earnings per share for the years ended December 31, 2016, 2015 and 2014:

	Year Ended December 31,
	2016		2015		2014
Weighted average number of shares outstanding used to calculate basic EPS		3,847		4,022		4,278
Dilutive securities:
Stock options and restricted share units		257		233		157
Weighted average number of shares and share equivalents outstanding used to calculate diluted EPS		4,104		4,255		4,435

	Year Ended December 31,
	2016		2015		2014
Anti-dilutive securities		87		50		757

Revenues-Homebuilding Operations

Revenues – Homebuilding Operations

Mortgage Banking Fees

Income Taxes

Financial Instruments

Equity-Based Compensation

Comprehensive Income

Reclassifications

Certain prior period amounts have been reclassified to conform to 2016 presentation.

Recent Accounting Pronouncements

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Weighted Average Shares and Share Equivalents Used to Calculate Basic and Diluted Earnings Per Share

The following weighted average shares and share equivalents were used to calculate basic and diluted earnings per share for the years ended December 31, 2016, 2015 and 2014:

	Year Ended December 31,
	2016		2015		2014
Weighted average number of shares outstanding used to calculate basic EPS		3,847		4,022		4,278
Dilutive securities:
Stock options and restricted share units		257		233		157
Weighted average number of shares and share equivalents outstanding used to calculate diluted EPS		4,104		4,255		4,435

Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share

	Year Ended December 31,
	2016		2015		2014
Anti-dilutive securities		87		50		757

Segment Information, Nature of Operations, and Certain Concentrations (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Revenues

	Year Ended December 31,
	2016		2015		2014
Revenues:
Homebuilding Mid Atlantic	$	3,319,776	$	3,022,789	$	2,617,108
Homebuilding North East		462,385		432,145		376,862
Homebuilding Mid East		1,192,472		1,014,920		892,513
Homebuilding South East		734,590		595,346		488,576
Mortgage Banking		113,321		93,808		69,509
Consolidated revenues	$	5,822,544	$	5,159,008	$	4,444,568

Profit before Taxes

	Year Ended December 31,
	2016			2015			2014
Profit before taxes:
Homebuilding Mid Atlantic	$	301,173		$	322,829		$	271,965
Homebuilding North East		21,947			37,914			33,390
Homebuilding Mid East		121,166			86,336			47,538
Homebuilding South East		71,098			57,384			37,525
Mortgage Banking		63,711			51,236			30,388
Total segment profit		579,095			555,699			420,806
Reconciling items:
Contract land deposit reserve adjustment (1)		10,933			13,805			3,612
Equity-based compensation expense		(43,598	)		(54,091	)		(63,227	)
Corporate capital allocation (2)		189,992			171,170			152,140
Unallocated corporate overhead		(89,376	)		(83,124	)		(61,108	)
Consolidation adjustments and other		35,204			22,622			23,867
Corporate interest expense		(20,553	)		(22,869	)		(22,544	)
Reconciling items sub-total		82,602			47,513			32,740
Consolidated profit before taxes	$	661,697		$	603,212		$	453,546

(1)	This item represents changes to the contract land deposit impairment reserve, which are not allocated to the reportable segments.

(2)	This item represents the elimination of the corporate capital allocation charge included in the respective homebuilding reportable segments. The corporate capital allocation charge is based on the segment’s monthly average asset balance, and was as follows for the years presented:

	Year Ended December 31,
	2016		2015		2014
Corporate capital allocation charge:
Homebuilding Mid Atlantic	$	119,758	$	107,705	$	96,328
Homebuilding North East		18,132		16,987		12,107
Homebuilding Mid East		28,303		27,263		26,299
Homebuilding South East		23,799		19,215		17,406
Total corporate capital allocation charge	$	189,992	$	171,170	$	152,140

Assets

	As of December 31,
	2016			2015
Assets:
Homebuilding Mid Atlantic	$	1,054,779		$	994,804
Homebuilding North East		126,720			133,106
Homebuilding Mid East		222,736			220,094
Homebuilding South East		214,225			175,572
Mortgage Banking		403,250			372,203
Total segment assets		2,021,710			1,895,779
Reconciling items:
Consolidated variable interest entity		1,251			1,749
Cash and cash equivalents		375,748			397,522
Deferred taxes		170,652			161,805
Intangible assets and goodwill		51,526			52,909
Contract land deposit reserve		(31,306	)		(42,239	)
Consolidation adjustments and other		54,362			44,193
Reconciling items sub-total		622,233			615,939
Consolidated assets	$	2,643,943		$	2,511,718

Interest Income

	Year Ended December 31,
	2016		2015		2014
Interest income:
Mortgage Banking	$	7,569	$	6,485	$	4,940
Total segment interest income		7,569		6,485		4,940
Other unallocated interest income		1,111		1,211		1,311
Consolidated interest income	$	8,680	$	7,696	$	6,251

Interest Expense

	Year Ended December 31,
	2016			2015			2014
Interest expense:
Homebuilding Mid Atlantic	$	119,808		$	107,748		$	96,364
Homebuilding North East		18,141			16,991			12,114
Homebuilding Mid East		28,307			27,263			26,300
Homebuilding South East		23,804			19,217			17,409
Mortgage Banking		1,086			641			549
Total segment interest expense		191,146			171,860			152,736
Corporate capital allocation		(189,992	)		(171,170	)		(152,140	)
Senior Notes and other interest		20,553			22,869			22,544
Consolidated interest expense	$	21,707		$	23,559		$	23,140

Depreciation and Amortization

	Year Ended December 31,
	2016		2015		2014
Depreciation and amortization:
Homebuilding Mid Atlantic	$	8,089	$	7,876	$	6,489
Homebuilding North East		2,053		1,571		1,208
Homebuilding Mid East		3,748		4,003		3,212
Homebuilding South East		2,276		2,191		1,715
Mortgage Banking		1,117		1,136		1,089
Total segment depreciation and amortization		17,283		16,777		13,713
Unallocated corporate		4,986		4,757		3,901
Consolidated depreciation and amortization	$	22,269	$	21,534	$	17,614

Expenditures for Property and Equipment

	Year Ended December 31,
	2016		2015		2014
Expenditures for property and equipment:
Homebuilding Mid Atlantic	$	8,838	$	8,287	$	9,047
Homebuilding North East		3,423		2,220		2,311
Homebuilding Mid East		4,027		3,774		6,982
Homebuilding South East		3,594		1,753		3,472
Mortgage Banking		726		265		2,580
Total segment expenditures for property and equipment		20,608		16,299		24,392
Unallocated corporate		1,761		1,978		7,280
Consolidated expenditures for property and equipment	$	22,369	$	18,277	$	31,672

Corporate Capital Allocation Charge

The corporate capital allocation charge is based on the segment’s monthly average asset balance, and was as follows for the years presented:

	Year Ended December 31,
	2016		2015		2014
Corporate capital allocation charge:
Homebuilding Mid Atlantic	$	119,758	$	107,705	$	96,328
Homebuilding North East		18,132		16,987		12,107
Homebuilding Mid East		28,303		27,263		26,299
Homebuilding South East		23,799		19,215		17,406
Total corporate capital allocation charge	$	189,992	$	171,170	$	152,140

Variable Interest Entities (Tables)

12 Months Ended

Dec. 31, 2016

Variable Interest Entity Reporting Entity Involvement Maximum Loss Exposure [Abstract]

Total Risk of Loss Related to Contract Land Deposits

NVR’s total risk of loss related to contract land deposits as of December 31, 2016 and 2015 was as follows:

	December 31,
	2016			2015
Contract land deposits	$	411,150		$	385,534
Loss reserve on contract land deposits		(31,306	)		(42,239	)
Contract land deposits, net		379,844			343,295
Contingent obligations in the form of letters of credit		2,379			3,302
Contingent specific performance obligations (1)		1,505			1,505
Total risk of loss	$	383,728		$	348,102

(1)	As of both December 31, 2016 and 2015, the Company was committed to purchase 10 finished lots under specific performance obligations.

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

Joint Ventures (Tables)

12 Months Ended

Dec. 31, 2016

Consolidated Joint Venture

Schedule Of Equity Method Investments [Line Items]

Condensed Balance Sheets

The condensed balance sheets of the consolidated JV at December 31, 2016 and 2015 were as follows:

	December 31,
	2016		2015
Assets:
Cash	$	1,214	$	990
Other assets		37		379
Land under development		—		380
Total assets	$	1,251	$	1,749

Liabilities and equity:
Accrued expenses		550		567
Equity		701		1,182
Total liabilities and equity	$	1,251	$	1,749

Capitalized Interest (Tables)

12 Months Ended

Dec. 31, 2016

Interest Costs Incurred Capitalized [Abstract]

Summary of Interest Costs Incurred, Capitalized, Expensed and Charged to Cost of Sales

NVR’s interest costs incurred, capitalized, expensed and charged to cost of sales during the years ended December 31, 2016, 2015 and 2014 was as follows:

	December 31,
	2016			2015			2014
Interest capitalized, beginning of year	$	4,434		$	4,072		$	3,294
Interest incurred		25,951			25,155			24,994
Interest charged to interest expense		(21,707	)		(23,559	)		(23,140	)
Interest charged to cost of sales		(3,572	)		(1,234	)		(1,076	)
Interest capitalized, end of year	$	5,106		$	4,434		$	4,072

Property, Plant and Equipment ("PP&E") (Tables)

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Summary of Property, Plant and Equipment ("PP&E")

	December 31,
	2016			2015
Homebuilding:
Office facilities and other	$	33,352		$	31,696
Model home furniture and fixtures		34,924			33,041
Production facilities		58,068			51,636
Gross Homebuilding PP&E		126,344			116,373
Less: accumulated depreciation		(80,429	)		(71,722	)
Net Homebuilding PP&E	$	45,915		$	44,651
Mortgage Banking:
Office facilities and other	$	11,379		$	10,629
Less: accumulated depreciation		(6,476	)		(5,316	)
Net Mortgage Banking PP&E	$	4,903		$	5,313

Common Stock (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Share Repurchases of Common Stock

The Company made the following share repurchases during the years indicated:

	Year Ended December 31,
	2016		2015		2014
Aggregate purchase price	$	455,351	$	431,367	$	567,544
Number of shares repurchased		280		290		508

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes consists of the following:

	Year Ended December 31,
		2016			2015		2014
Current:
Federal	$	209,454		$	180,895	$	148,221
State		38,095			36,142		28,881
Deferred:
Federal		(9,230	)		2,681		(4,451	)
State		(1,884	)		567		(735	)
	$	236,435		$	220,285	$	171,916

Income Tax Benefits in Shareholders' Equity

In addition to amounts applicable to income before taxes, the following income tax benefits were recorded in shareholders’ equity:

Year Ended December 31,

2016

2015

2014

Income tax benefits arising from compensation expense for

tax purposes in excess of amounts recognized for financial

statement purposes

13,661

23,311

9,437

Deferred Income Taxes on Consolidated Balance Sheets

Deferred income taxes on NVR’s consolidated balance sheets were comprised of the following:

	December 31,
	2016		2015
Deferred tax assets:
Other accrued expenses and contract land deposit reserve	$	76,498	$	77,781
Deferred compensation		7,075		7,280
Equity-based compensation expense		55,077		45,361
Inventory		13,514		12,722
Unrecognized tax benefit		23,954		24,740
Other		10,106		9,391
Total deferred tax assets		186,224		177,275
Less: deferred tax liabilities		5,414		6,489
Net deferred tax position	$	180,810	$	170,786

Income Tax Expense Reconciliation

	Year Ended December 31,
	2016			2015			2014
Income taxes computed at the federal statutory rate	$	231,595		$	211,124		$	158,741
State income taxes, net of federal income tax benefit		23,738			23,919			18,800
Other, net (1)		(18,898	)		(14,758	)		(5,625	)
	$	236,435		$	220,285		$	171,916

(1)

Primarily attributable to tax benefits from the domestic production activities deduction.

Reconciliation of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:

	Year Ended December 31,
	2016			2015
Balance at beginning of year	$	46,591		$	46,004
Additions based on tax positions related to the current year		4,440			3,897
Reductions for tax positions of prior years		(4,921	)		(3,310	)
Settlements		—			—
Balance at end of year	$	46,110		$	46,591

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Equity-Based Compensation Plans with Grants Outstanding

The following table provides a summary of each of the Company’s equity-based compensation plans for any plan with grants outstanding at December 31, 2016:

Equity-Based Compensation Plans	Shares Authorized		Options/RSUs Outstanding		Shares Available to Issue
1998 Management Long-Term Stock Option Plan		1,000		6		—
1998 Directors' Long-Term Stock Option Plan		150		5		—
2000 Broadly-Based Stock Option Plan		2,000		118		—
2010 Equity Incentive Plan (1)		700		282		44
2014 Equity Incentive Plan (2)		950		681		269

(1)

(2)

Equity-Based Compensation Plans

The following table provides additional information relative to NVR’s equity-based compensation plans for the year ended December 31, 2016:

	Shares			Weighted Avg. Per Share Exercise Price		Weighted Avg. Remaining Contract Life (years)		Aggregate Intrinsic Value
Stock Options
Outstanding at December 31, 2015		1,096		$	998.88
Granted		74			1,658.88
Exercised		(50	)		768.06
Forfeited		(44	)		1,154.56
Outstanding at December 31, 2016		1,076		$	1,048.38		6.6	$	667,937
Exercisable at December 31, 2016		423		$	875.22		5.3	$	335,584

RSUs
Outstanding at December 31, 2015		51
Granted		—
Vested		(33	)
Forfeited		(2	)
Outstanding at December 31, 2016		16						$	26,622
Vested, but not issued at December 31, 2016		6						$	9,997

Black-Scholes Option-Pricing Model Assumptions

The fair value of the Options granted during 2016, 2015 and 2014 was estimated on the grant date using the Pricing Model, based on the following assumptions:

	2016		2015		2014
Estimated option life	5.27 years		5.17 years		5.16 years
Risk free interest rate (range)	0.86%-2.21%		1.04%-2.07%		1.06%-2.49%
Expected volatility (range)	15.91%-23.49%		17.00%-26.79%		18.26%-30.57%
Expected dividend rate		0.00%		0.00%		0.00%
Weighted average grant-date fair value per share of options granted	$	320.21	$	296.50	$	267.66

Exercised Option Proceeds

Information with respect to the vested RSUs and exercised Options is as follows:

	Year Ended December 31,
	2016		2015		2014
Aggregate exercise proceeds (1)	$	38,106	$	85,948	$	76,153
Aggregate intrinsic value on exercise dates	$	96,600	$	99,288	$	62,136

(1)	Aggregate exercise proceeds include the Option exercise price received in cash or the fair market value of NVR stock surrendered by the optionee in lieu of cash.

Commitments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Lease Payments under Operating Leases

Future minimum lease payments under these operating leases as of December 31, 2016 are as follows:

Year Ending December 31,
2017	$	25,331
2018		19,544
2019		16,833
2020		13,785
2021		10,938
Thereafter		22,760
		109,191
Sublease income		(53	)
	$	109,138

Summary of Changes in Product Warranties Reserve

The following table reflects the changes in the Company’s warranty reserve (see Note 1 herein for further discussion of warranty/product liability reserves):

	Year Ended December 31,
	2016			2015			2014
Warranty reserve, beginning of year	$	87,407		$	94,060		$	101,507
Provision		50,787			47,003			51,668
Payments		(44,299	)		(53,656	)		(59,115	)
Warranty reserve, end of year	$	93,895		$	87,407		$	94,060

Fair Value (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Undesignated Derivative Instruments

The undesignated derivative instruments are included on the accompanying consolidated balance sheet, as of December 31, 2016, as follows:

	Fair Value		Balance Sheet Location
Rate lock commitments:
Gross assets	$	5,403
Gross liabilities		3,327
Net rate lock commitments	$	2,076	NVRM - Other assets
Forward sales contracts:
Gross assets	$	9,148
Gross liabilities		1,084
Net forward sales contracts	$	8,064	NVRM - Other assets

Fair Value Measurement

The fair value measurement as of December 31, 2016 was as follows:

	Notional or Principal Amount		Assumed Gain/(Loss) From Loan Sale			Interest Rate Movement Effect			Servicing Rights Value		Security Price Change		Total Fair Value Measurement Gain/(Loss)
Rate lock commitments	$	458,161	$	(339	)	$	(1,682	)	$	4,097	$	—	$	2,076
Forward sales contracts	$	738,637		—			—			—		8,064		8,064
Mortgages held for sale	$	357,912		62			(9,962	)		3,946		—		(5,954	)
Total fair value measurement			$	(277	)	$	(11,644	)	$	8,043	$	8,064	$	4,186

Quarterly Results (unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data and Operating Information

The following table sets forth unaudited selected financial data and operating information on a quarterly basis for the years ended December 31, 2016 and 2015.

	Year Ended December 31, 2016
	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter

Revenues – homebuilding operations	$	1,718,527	$	1,507,451	$	1,361,741	$	1,121,504
Gross profit – homebuilding operations	$	305,087	$	265,159	$	235,372	$	195,744
Mortgage banking fees	$	34,239	$	30,118	$	26,442	$	22,522
Net income	$	150,891	$	117,392	$	91,676	$	65,303
Diluted earnings per share	$	37.80	$	28.46	$	22.01	$	15.79
New orders (units)		3,645		3,477		4,324		4,137
Settlements (units)		4,419		3,922		3,581		3,006
Backlog, end of period (units)		6,884		7,658		8,103		7,360
Loans closed	$	1,201,164	$	1,055,163	$	942,407	$	753,840

	Year Ended December 31, 2015
	4th Quarter		3rd Quarter		2nd Quarter		1st Quarter

Revenues – homebuilding operations	$	1,528,084	$	1,374,467	$	1,221,111	$	941,538
Gross profit – homebuilding operations	$	289,496	$	262,795	$	234,257	$	159,870
Mortgage banking fees	$	27,191	$	27,884	$	22,522	$	16,211
Net income	$	134,004	$	116,470	$	93,395	$	39,058
Diluted earnings per share	$	31.92	$	27.11	$	21.91	$	9.22
New orders (units)		3,100		3,258		3,796		3,926
Settlements (units)		4,010		3,607		3,175		2,534
Backlog, end of period (units)		6,229		7,139		7,488		6,867
Loans closed	$	1,042,440	$	951,872	$	859,403	$	638,627

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Significant Accounting Policies [Line Items]
Cash	$ 396,619,000	$ 425,316,000	$ 545,419,000	$ 866,253,000
Pre-tax recovery related to impairment of contract land deposits, net	4,269,000	11,058,000	$ 225,000
Contract land deposit assets impairment valuation allowances	$ 31,306,000	42,239,000
Senior Notes due 2022 [Member]
Significant Accounting Policies [Line Items]
Senior notes interest rate	3.95%
Senior notes maturity date	Sep. 15, 2022
Model Home Furniture and Fixtures [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Office Facilities and Other [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Office Facilities and Other [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Manufacturing Facilities [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Manufacturing Facilities [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Homebuilding [Member]
Significant Accounting Policies [Line Items]
Cash	$ 375,748,000	397,522,000
Restricted cash	17,561,000	23,440,000
Impairment of goodwill	0
Homebuilding [Member] \| Heartland Homes Inc [Member]
Significant Accounting Policies [Line Items]
Goodwill acquired from business acquisition	441,000	441,000
Finite-lived intangibles acquired from business acquisition, net of accumulated amortization	$ 2,158,000	3,541,000
Weighted average life of finite-lived intangible assets	3 years
Mortgage Banking [Member]
Significant Accounting Policies [Line Items]
Cash	$ 19,657,000	26,804,000
Restricted cash	$ 1,857,000	2,038,000
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member]
Significant Accounting Policies [Line Items]
Typical length of days loans sold into secondary market	30 days
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Rate Lock Commitments [Member]
Significant Accounting Policies [Line Items]
Notional or Principal Amount	$ 458,161,000
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Forward Sales Contracts [Member]
Significant Accounting Policies [Line Items]
Notional or Principal Amount	738,637,000
Consolidated Joint Venture
Significant Accounting Policies [Line Items]
Cash	$ 1,214,000	$ 990,000

Summary of Significant Accounting Policies - Weighted Average Shares and Share Equivalents Used to Calculate Basic and Diluted Earnings Per Share (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Weighted average number of shares outstanding used to calculate basic EPS	3,847	4,022	4,278
Dilutive securities:
Stock options and restricted share units	257	233	157
Weighted average number of shares and share equivalents outstanding used to calculate diluted EPS	4,104	4,255	4,435

Summary of Significant Accounting Policies - Summary of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Anti-dilutive securities	87	50	757

Segment Information, Nature of Operations, and Certain Concentrations - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016 MetropolitanArea Segment
Segment Reporting Information [Line Items]
Number of metropolitan areas Ryan Homes product are sold \| MetropolitanArea	29
Senior Notes due 2022 [Member]
Segment Reporting Information [Line Items]
Senior notes interest rate	3.95%
Senior notes maturity	Sep. 15, 2022
Homebuilding [Member]
Segment Reporting Information [Line Items]
Number of reportable segments	4
Mortgage Banking [Member]
Segment Reporting Information [Line Items]
Number of reportable segments	1
Geographic Concentration Risk \| Homebuilding [Member] \| District of Columbia [Member]
Segment Reporting Information [Line Items]
Revenue derived	30.00%
Geographic Concentration Risk \| Homebuilding [Member] \| Maryland, Baltimore [Member]
Segment Reporting Information [Line Items]
Revenue derived	13.00%

Segment Information, Nature of Operations, and Certain Concentrations - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Revenue Reconciling Item [Line Items]
Consolidated revenues									$ 5,822,544	$ 5,159,008	$ 4,444,568
Homebuilding [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues	$ 1,718,527	$ 1,507,451	$ 1,361,741	$ 1,121,504	$ 1,528,084	$ 1,374,467	$ 1,221,111	$ 941,538	5,709,223	5,065,200	4,375,059
Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues									3,319,776	3,022,789	2,617,108
Homebuilding [Member] \| North East [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues									462,385	432,145	376,862
Homebuilding [Member] \| Mid East [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues									1,192,472	1,014,920	892,513
Homebuilding [Member] \| South East [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues									734,590	595,346	488,576
Mortgage Banking [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Mortgage Banking	$ 34,239	$ 30,118	$ 26,442	$ 22,522	$ 27,191	$ 27,884	$ 22,522	$ 16,211	$ 113,321	$ 93,808	$ 69,509

Segment Information, Nature of Operations, and Certain Concentrations - Profit before Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	$ 661,697	$ 603,212	$ 453,546
Equity-based compensation expense	(43,598)	(54,091)	(63,227)
Corporate interest expense	(21,707)	(23,559)	(23,140)
Homebuilding [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	601,102	555,329	427,884
Corporate interest expense	(20,621)	(22,918)	(22,591)
Mortgage Banking [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	60,595	47,883	25,662
Corporate interest expense	(1,086)	(641)	(549)
Operating Segments [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	579,095	555,699	420,806
Corporate interest expense	(191,146)	(171,860)	(152,736)
Operating Segments [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	301,173	322,829	271,965
Corporate interest expense	(119,808)	(107,748)	(96,364)
Operating Segments [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	21,947	37,914	33,390
Corporate interest expense	(18,141)	(16,991)	(12,114)
Operating Segments [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	121,166	86,336	47,538
Corporate interest expense	(28,307)	(27,263)	(26,300)
Operating Segments [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	71,098	57,384	37,525
Corporate interest expense	(23,804)	(19,217)	(17,409)
Operating Segments [Member] \| Mortgage Banking [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	63,711	51,236	30,388
Corporate interest expense	(1,086)	(641)	(549)
Reconciling Items [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Profit before taxes	82,602	47,513	32,740
Contract land deposit reserve adjustment	10,933	13,805	3,612
Equity-based compensation expense	(43,598)	(54,091)	(63,227)
Corporate capital allocation	189,992	171,170	152,140
Unallocated corporate overhead	(89,376)	(83,124)	(61,108)
Consolidation adjustments and other	35,204	22,622	23,867
Corporate interest expense	(20,553)	(22,869)	(22,544)
Reconciling Items [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Corporate capital allocation	119,758	107,705	96,328
Reconciling Items [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Corporate capital allocation	18,132	16,987	12,107
Reconciling Items [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Corporate capital allocation	28,303	27,263	26,299
Reconciling Items [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Corporate capital allocation	$ 23,799	$ 19,215	$ 17,406

Segment Information, Nature of Operations, and Certain Concentrations - Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Asset Reconciling Item [Line Items]
Assets	$ 2,643,943	$ 2,511,718
Cash and cash equivalents	396,619	425,316	$ 545,419	$ 866,253
Contract land deposit reserve	(31,306)	(42,239)
Homebuilding [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	2,233,346	2,132,168
Consolidated variable interest entity	1,251	1,749
Cash and cash equivalents	375,748	397,522
Deferred taxes	170,652	161,805
Intangible assets and goodwill	2,599	3,982
Mortgage Banking [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	410,597	379,550
Cash and cash equivalents	19,657	26,804
Operating Segments [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	2,021,710	1,895,779
Operating Segments [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	1,054,779	994,804
Operating Segments [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	126,720	133,106
Operating Segments [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	222,736	220,094
Operating Segments [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	214,225	175,572
Operating Segments [Member] \| Mortgage Banking [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	403,250	372,203
Reconciling Items [Member]
Segment Reporting Asset Reconciling Item [Line Items]
Assets	622,233	615,939
Consolidated variable interest entity	1,251	1,749
Cash and cash equivalents	375,748	397,522
Deferred taxes	170,652	161,805
Intangible assets and goodwill	51,526	52,909
Contract land deposit reserve	(31,306)	(42,239)
Consolidation adjustments and other	$ 54,362	$ 44,193

Segment Information, Nature of Operations, and Certain Concentrations - Interest Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest income	$ 8,680	$ 7,696	$ 6,251
Mortgage Banking [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Interest income	7,569	6,485	4,940
Operating Segments [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Interest income	7,569	6,485	4,940
Consolidation adjustments and other [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Other unallocated interest income	$ 1,111	$ 1,211	$ 1,311

Segment Information, Nature of Operations, and Certain Concentrations - Interest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	$ 21,707	$ 23,559	$ 23,140
Homebuilding [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	20,621	22,918	22,591
Mortgage Banking [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	1,086	641	549
Operating Segments [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	191,146	171,860	152,736
Operating Segments [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	119,808	107,748	96,364
Operating Segments [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	18,141	16,991	12,114
Operating Segments [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	28,307	27,263	26,300
Operating Segments [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	23,804	19,217	17,409
Operating Segments [Member] \| Mortgage Banking [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	1,086	641	549
Reconciling Items [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated interest expense	20,553	22,869	22,544
Corporate capital allocation	(189,992)	(171,170)	(152,140)
Reconciling Items [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation	(119,758)	(107,705)	(96,328)
Reconciling Items [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation	(18,132)	(16,987)	(12,107)
Reconciling Items [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation	(28,303)	(27,263)	(26,299)
Reconciling Items [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation	$ (23,799)	$ (19,215)	$ (17,406)

Segment Information, Nature of Operations, and Certain Concentrations - Depreciation and Amortization (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	$ 22,269	$ 21,534	$ 17,614
Operating Segments [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	17,283	16,777	13,713
Operating Segments [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	8,089	7,876	6,489
Operating Segments [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	2,053	1,571	1,208
Operating Segments [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	3,748	4,003	3,212
Operating Segments [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	2,276	2,191	1,715
Operating Segments [Member] \| Mortgage Banking [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	1,117	1,136	1,089
Consolidation adjustments and other [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated depreciation and amortization	$ 4,986	$ 4,757	$ 3,901

Segment Information, Nature of Operations, and Certain Concentrations - Expenditures for Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	$ 22,369	$ 18,277	$ 31,672
Operating Segments [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	20,608	16,299	24,392
Operating Segments [Member] \| Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	8,838	8,287	9,047
Operating Segments [Member] \| Homebuilding [Member] \| North East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	3,423	2,220	2,311
Operating Segments [Member] \| Homebuilding [Member] \| Mid East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	4,027	3,774	6,982
Operating Segments [Member] \| Homebuilding [Member] \| South East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	3,594	1,753	3,472
Operating Segments [Member] \| Mortgage Banking [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	726	265	2,580
Consolidation adjustments and other [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Consolidated expenditures for property and equipment	$ 1,761	$ 1,978	$ 7,280

Segment Information, Nature of Operations, and Certain Concentrations - Corporate Capital Allocation Charge (Detail) - Reconciling Items [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	$ 189,992	$ 171,170	$ 152,140
Homebuilding [Member] \| Mid Atlantic [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	119,758	107,705	96,328
Homebuilding [Member] \| North East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	18,132	16,987	12,107
Homebuilding [Member] \| Mid East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	28,303	27,263	26,299
Homebuilding [Member] \| South East [Member]
Segment Reporting Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	$ 23,799	$ 19,215	$ 17,406

Variable Interest Entities - Additional Information (Detail) $ in Thousands	Dec. 31, 2016 USD ($) Lot	Dec. 31, 2015 USD ($)
Variable Interest Entity [Line Items]
Maximum range of deposits required under the purchase agreements	10.00%
Contract land deposits in cash	$ 411,150	$ 385,534
Variable Interest Entities [Member]
Variable Interest Entity [Line Items]
Maximum range of deposits required under the purchase agreements	10.00%
Lots controlled by NVR \| Lot	73,200
Contract land deposits in cash under Lot Purchase Agreements	$ 396,200
Letters of credit related to lots	$ 2,400
Contract on Raw Ground with Landowners [Member]
Variable Interest Entity [Line Items]
Lots controlled by NVR \| Lot	9,600
Contract land deposits in cash	$ 14,900
Refundable deposits	$ 1,400

Variable Interest Entities - Total Risk of Loss Related to Contract Land Deposits (Detail) - USD ($)
$ in Thousands

Dec. 31, 2016

Dec. 31, 2015

Variable Interest Entity Reporting Entity Involvement Maximum Loss Exposure [Abstract]

Contract land deposits

$ 411,150

$ 385,534

Loss reserve on contract land deposits

(31,306)

(42,239)

Contract land deposits, net

379,844

343,295

Contingent obligations in the form of letters of credit

2,379

3,302

Contingent specific performance obligations

^[1]

1,505

Total risk of loss

$ 383,728

$ 348,102

[1]	As of both December 31, 2016 and 2015, the Company was committed to purchase 10 finished lots under specific performance obligations.

Joint Ventures - Additional Information (Detail) $ in Thousands	Dec. 31, 2016 USD ($) Lot JointVenture	Dec. 31, 2015 USD ($) Lot JointVenture
Joint Ventures [Line Items]
Aggregate investment \| $	$ 49,400	$ 60,500
Number of joint ventures \| JointVenture	6	6
Expected production of finished lots \| Lot	7,400	8,000
Total lots controlled by company under the joint venture \| Lot	4,200	4,700
Total lots either under contract with unrelated parties or not under the current contract \| Lot	3,200	3,300
Additional funding commitments in the aggregate \| $	$ 6,200	$ 11,500
Number of joint ventures with additional funding commitment \| JointVenture	3	3
Number of joint ventures NVR is not primary beneficiary \| JointVenture	5
Other Assets [Member]
Joint Ventures [Line Items]
Aggregate investment \| $	$ 49,000	$ 59,800

Joint Ventures - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets:
Cash	$ 396,619	$ 425,316	$ 545,419	$ 866,253
Land under development	46,999	60,611
Liabilities and equity:
Equity	1,304,441	1,239,165	$ 1,124,255	$ 1,261,352
Total liabilities and shareholders' equity	2,643,943	2,511,718
Consolidated Joint Venture
Assets:
Cash	1,214	990
Other assets	37	379
Land under development		380
Total assets	1,251	1,749
Liabilities and equity:
Accrued expenses	550	567
Equity	701	1,182
Total liabilities and shareholders' equity	$ 1,251	$ 1,749

Land Under Development - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Lot Parcel	Feb. 29, 2016 USD ($)	Dec. 31, 2015 USD ($) Lot Parcel
Real Estate [Abstract]
Number of raw parcels of land owned \| Parcel	4		4
Carrying value of raw parcels of land	$ 46,999		$ 60,611
Number of finished lots for use in homebuilding operations \| Lot	600		980
Aggregate additional funding commitments related to raw land property under joint development	$ 12,000
Expected development credits that will offset the aggregate additional funding commitments related to raw land property development	$ 7,100
Acquisition costs of land under development and finished lots		$ 150,000
Lots sold to unrelated party \| Lot	56
Amount of lots sold to unrelated parties under contract	$ 16,800

Capitalized Interest - Summary of Interest Costs Incurred, Capitalized, Expensed and Charged to Cost of Sales (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest Costs Incurred Capitalized [Abstract]
Interest capitalized, beginning of year	$ 4,434	$ 4,072	$ 3,294
Interest incurred	25,951	25,155	24,994
Interest expense	(21,707)	(23,559)	(23,140)
Interest charged to cost of sales	(3,572)	(1,234)	(1,076)
Interest capitalized, end of year	$ 5,106	$ 4,434	$ 4,072

Related Party Transactions - Additional Information (Detail) - Elm Street [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Lot	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Related Party Transaction [Line Items]
Related party forward lot purchase agreements purchase price	$ 65,200
Number of related parties for forward lot purchase agreement \| Lot	1
Market price of developed lots	$ 44,500	$ 41,200	$ 50,100
Expected number of lots from joint venture with Elm Street \| Lot	2,400
Development costs to manage property under related party transactions	$ 143	$ 143	$ 143

Property Plant and Equipment ("PP&E") - Summary of Property Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Homebuilding [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 126,344	$ 116,373
Less: accumulated depreciation	(80,429)	(71,722)
Property, Plant and Equipment, Net	45,915	44,651
Homebuilding [Member] \| Office Facilities and Other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	33,352	31,696
Homebuilding [Member] \| Model Home Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	34,924	33,041
Homebuilding [Member] \| Production Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	58,068	51,636
Mortgage Banking [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	4,903	5,313
Mortgage Banking [Member] \| Office Facilities and Other [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	11,379	10,629
Less: accumulated depreciation	(6,476)	(5,316)
Property, Plant and Equipment, Net	$ 4,903	$ 5,313

Debt - Additional Information (Detail) - USD ($)			12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Jul. 27, 2016	Jul. 15, 2016	Dec. 31, 2016	Dec. 31, 2015
Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Debt issuance date			Sep. 10, 2012
Senior notes principal amount			$ 600,000,000
Senior notes maturity date			Sep. 15, 2022
Senior notes effective interest rate			3.97%
Senior notes proceeds			$ 593,900,000
Senior notes interest rate			3.95%
Frequency of senior notes payment			semi-annually in arrears on March 15 and September 15
Debt issuance cost			$ 2,904,000	$ 3,413,000
Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maximum loan borrowing capacity		$ 200,000,000
Increase in commitment available		$ 300,000,000
Line of credit facility, interest rate description			Borrowings under the Credit Agreement generally bear interest for Base Rate Loans at a Base Rate equal to the highest of (i) a Federal Funds Rate plus one-half of one percent, (ii) Bank of America’s publicly announced “prime rate,” and (iii) the Eurodollar Rate plus one percent, plus the Applicable Rate which is based on the Company’s debt rating, or for Eurodollar Rate Loans, at the Eurodollar Rate equal to LIBOR plus the Applicable Rate.
Expiration date		Jul. 15, 2021
Debt outstanding			$ 0
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Debt instrument, marginal interest rate		0.50%
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Eurodollar Rate [Member]
Debt Instrument [Line Items]
Debt instrument, marginal interest rate		1.00%
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Sublimit for Issuance of Letters of Credit [Member]
Debt Instrument [Line Items]
Maximum loan borrowing capacity		$ 100,000,000
Letters of credit outstanding			$ 8,300,000
Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Sublimit for Swing Line Commitment [Member]
Debt Instrument [Line Items]
Maximum loan borrowing capacity		$ 25,000,000
Repurchase Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Senior notes interest rate			3.06%
Maximum loan borrowing capacity	$ 150,000,000
Increase in commitment available	$ 50,000,000
Expiration date			Jul. 26, 2017
Debt outstanding			$ 0	$ 0
Borrowing base limitations			$ 0
Repurchase Agreement [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Senior notes interest rate			2.25%

Common Stock - Additional Information (Detail) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Of Stockholders Equity [Abstract]
Common shares outstanding	3,693	3,891
Reissued shares during the period, shares	83	131	123

Common Stock - Share Repurchase of Common Stock (Detail) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement Of Stockholders Equity [Abstract]
Aggregate purchase price	$ 455,351	$ 431,367	$ 567,544
Number of shares repurchased	280	290	508

Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 209,454	$ 180,895	$ 148,221
State	38,095	36,142	28,881
Deferred:
Federal	(9,230)	2,681	(4,451)
State	(1,884)	567	(735)
Total	$ 236,435	$ 220,285	$ 171,916

Income Taxes - Income Tax Benefits in Shareholders' Equity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax benefits arising from compensation expense for tax purposes in excess of amounts recognized for financial statement purposes	$ 13,661	$ 23,311	$ 9,437

Income Taxes - Deferred Income Taxes on Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Other accrued expenses and contract land deposit reserve	$ 76,498	$ 77,781
Deferred compensation	7,075	7,280
Equity-based compensation expense	55,077	45,361
Inventory	13,514	12,722
Unrecognized tax benefit	23,954	24,740
Other	10,106	9,391
Total deferred tax assets	186,224	177,275
Less: deferred tax liabilities	5,414	6,489
Net deferred tax position	$ 180,810	$ 170,786

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Estimated federal taxable income	$ 575,684	$ 471,512
Statutory federal income tax rate	35.00%
Effective tax rate	35.73%	36.52%	37.90%
Income tax expense due to reversal of previously recognized tax deductions			$ 7,000
Unrecognized tax benefits that would affect effective tax rate	$ 29,971
Accrued interest on unrecognized tax benefits		$ 125
Reversal of accrued interest on unrecognized tax benefits	1,582		$ 184
Total accrued interest on unrecognized tax benefits	19,639	$ 21,221
Reduction in unrecognized tax benefits	$ 10,614

Income Taxes - Income Tax Expense Reconciliation (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income taxes computed at the federal statutory rate

$ 231,595

$ 211,124

$ 158,741

State income taxes, net of federal income tax benefit

23,738

23,919

18,800

Other, net

^[1]

(18,898)

(14,758)

(5,625)

Total

$ 236,435

$ 220,285

$ 171,916

[1]	Primarily attributable to tax benefits from the domestic production activities deduction.

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 46,591	$ 46,004
Additions based on tax positions related to the current year	4,440	3,897
Reductions for tax positions of prior years	(4,921)	(3,310)
Settlements	0	0
Balance at end of year	$ 46,110	$ 46,591

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Additional Information (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) CompensationPlan $ / shares shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity-based compensation expense \| $	$ 43,598	$ 54,091	$ 63,227
Tax benefit related to equity-based compensation costs \| $	17,000	$ 19,700	$ 22,900
Total unrecognized compensation cost for all outstanding Options and RSUs \| $	$ 128,700
Weighted-average period over which the unrecognized compensation will be recorded	2 years 1 month 6 days
Options exercised (shares)	83,000	131,000	123,000
Combined plan contribution \| $	$ 16,700	$ 17,900	$ 17,000
Shares contributed to the Employee Stock Ownership Plan	9,000	11,000
Number of deferred compensation plans \| CompensationPlan	2
Common stock shares held in rabbi trust account	108,640	108,614
RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price \| $ / shares	$ 0
RSUs [Member] \| Two Thousand Ten Equity Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units grants during period	0
Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of years for options granted	10 years
Options [Member] \| 2014 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units vesting period or Option vesting period	4 years
Options issued under the plan	64,000
Options vesting rights	over four years in 25% increments beginning on December 31, 2016, or later based on the date of grant
Percentage of options vesting rights	25.00%
Options [Member] \| Two Thousand Ten Equity Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units vesting period or Option vesting period	4 years
Options issued under the plan	10,000
Options vesting rights	over four years in 25% increments beginning on December 31, 2018
Percentage of options vesting rights	25.00%
Options [Member] \| Option Grant Contingent upon Continued Employment or Service as a Director and Achievement of Performance Metric \| 2014 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of options vesting rights	50.00%
Options granted	37,000
Options [Member] \| Option Grant Solely Contingent upon Continued Employment or Continued Service as a Director \| 2014 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of options vesting rights	50.00%
Options granted	27,000
Options [Member] \| Options Granted in Current Year [Member] \| 2014 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting rights	Over four years in 25% increments beginning on December 31, 2018
Minimum [Member] \| RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units vesting period or Option vesting period	2 years
Minimum [Member] \| Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units vesting period or Option vesting period	3 years
Maximum [Member] \| RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units vesting period or Option vesting period	4 years
Maximum [Member] \| Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted share units vesting period or Option vesting period	6 years

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Summary of Equity-Based Compensation Plans with Grants Outstanding (Detail)

Dec. 31, 2016

1998 Management Long-Term Stock Option Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

1,000,000

Options/RSUs Outstanding

6,000

1998 Directors' Long-Term Stock Option Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

150,000

Options/RSUs Outstanding

5,000

2000 Broadly-Based Stock Option Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

2,000,000

Options/RSUs Outstanding

118,000

2010 Equity Incentive Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

700,000

^[1]

Options/RSUs Outstanding

282,000

^[1]

Shares Available to Issue

44,000

^[1]

2014 Equity Incentive Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

950,000

^[2]

Options/RSUs Outstanding

681,000

^[2]

Shares Available to Issue

269,000

^[2]

[1]

[2]

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Summary of Equity-Based Compensation Plans with Grants Outstanding (Parenthetical) (Detail) - shares

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Options [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Options outstanding

1,076,000

1,096,000

Two Thousand Ten Equity Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

^[1]

700,000

Shares Available to Issue

^[1]

44,000

Two Thousand Ten Equity Plan | RSUs [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

240,000

Restricted share units outstanding

16,000

51,000

Shares Available to Issue

38,000

Two Thousand Ten Equity Plan | Options [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Options outstanding

266,000

Shares Available to Issue

44,000

Restricted share units vesting period or Option vesting period

4 years

Options vesting rights

over four years in 25% increments beginning on December 31, 2018

2014 Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares Authorized

^[2]

950,000

Shares Available to Issue

^[2]

269,000

2014 Plan [Member] | Options [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Percentage of options vesting rights

25.00%

Performance metric period

3 years

Restricted share units vesting period or Option vesting period

4 years

Options vesting rights

over four years in 25% increments beginning on December 31, 2016, or later based on the date of grant

2014 Plan [Member] | Options [Member] | Option Grant Solely Contingent upon Continued Employment or Continued Service as a Director

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Percentage of options vesting rights

50.00%

2014 Plan [Member] | Options [Member] | Option Grant Contingent upon Continued Employment or Service as a Director and Achievement of Performance Metric

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Percentage of options vesting rights

50.00%

[1]

[2]

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Equity-Based Compensation Plans (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding at beginning of period (Shares)	1,096,000
Granted (Shares)	74,000
Exercised (Shares)	(50,000)
Forfeited (Shares)	(44,000)
Outstanding at end of period (Shares)	1,076,000
Exercisable at end of period (Shares)	423,000
Outstanding at beginning of period (Weighted Average Exercise Price) \| $ / shares	$ 998.88
Granted (Weighted Average Exercise Price) \| $ / shares	1,658.88
Exercised (Weighted Average Exercise Price) \| $ / shares	768.06
Forfeited (Weighted Average Exercise Price) \| $ / shares	1,154.56
Outstanding at end of period (Weighted Average Exercise Price) \| $ / shares	1,048.38
Exercisable at end of period (Weighted Average Exercise Price) \| $ / shares	$ 875.22
Outstanding at end of period (Weighted Average Remaining Contract Life (Years)	6 years 7 months 6 days
Exercisable at end of period (Weighted Average Remaining Contract Life (Years)	5 years 3 months 18 days
Outstanding at end of period (Aggregate Intrinsic Value) \| $	$ 667,937
Exercisable at end of period (Aggregate Intrinsic Value) \| $	$ 335,584
Two Thousand Ten Equity Plan \| Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding at end of period (Shares)	266,000
Two Thousand Ten Equity Plan \| RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding at beginning of period (Shares)	51,000
Granted (Shares)	0
Vested (Shares)	(33,000)
Forfeited (Shares)	(2,000)
Outstanding at end of period (Shares)	16,000
Vested, but not issued at end of period (Shares)	6,000
Outstanding at end of period (Aggregate Intrinsic Value) \| $	$ 26,622
Vested, but not issued at end of period (Aggregate Intrinsic Value) \| $	$ 9,997

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Black-Scholes Option-Pricing Model Assumptions (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Estimated option life	5 years 3 months 7 days	5 years 2 months 1 day	5 years 1 month 28 days
Risk free interest rate (range), minimum	0.86%	1.04%	1.06%
Risk free interest rate (range), maximum	2.21%	2.07%	2.49%
Expected volatility (range), minimum	15.91%	17.00%	18.26%
Expected volatility (range), maximum	23.49%	26.79%	30.57%
Expected dividend rate	0.00%	0.00%	0.00%
Weighted average grant-date fair value per share of options granted	$ 320.21	$ 296.50	$ 267.66

Equity-Based Compensation, Profit Sharing and Deferred Compensation Plans - Exercised Option Proceeds (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2016

Dec. 31, 2015

Dec. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Aggregate exercise proceeds

^[1]

$ 38,106

$ 85,948

$ 76,153

Aggregate intrinsic value on exercise dates

$ 96,600

$ 99,288

$ 62,136

[1]	Aggregate exercise proceeds include the Option exercise price received in cash or the fair market value of NVR stock surrendered by the optionee in lieu of cash.

Commitments and Contingent Liabilities - Future Minimum Lease Payments under Operating Leases (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2017	$ 25,331
2018	19,544
2019	16,833
2020	13,785
2021	10,938
Thereafter	22,760
Subtotal	109,191
Sublease income	(53)
Total minimum lease payments	$ 109,138

Commitments and Contingent Liabilities - Additional Information (Detail)
$ in Thousands

12 Months Ended

Dec. 31, 2016

USD ($)

Lot

Contract

Dec. 31, 2015

USD ($)

Lot

Dec. 31, 2014

USD ($)

Commitments And Contingencies [Line Items]

Rent expense under operating leases

$ 45,843

$ 48,056

$ 45,508

Maximum range of deposits required under the purchase agreements

10.00%

Term of business plan

5 years

Contingent forfeitable deposits with land developers

$ 94,600

Number of specific performance contracts | Contract

Finished lots committed to purchase under specific performance obligations | Lot

Purchase price of finished lots committed to purchase under specific performance obligations

^[1]

$ 1,505

Aggregate additional funding commitments related to raw land property development

12,000

Expected development credit offset amount

7,100

Contingent obligations under bonds or letters of credit arrangements

50,700

Credit Agreement [Member]

Commitments And Contingencies [Line Items]

Contingent obligations under letters of credit arrangements

$ 8,300

[1]	As of both December 31, 2016 and 2015, the Company was committed to purchase 10 finished lots under specific performance obligations.

Commitments and Contingent Liabilities - Summary of Changes in Product Warranty/Liability Reserve (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Product Warranties Disclosures [Abstract]
Warranty reserve, beginning of year	$ 87,407	$ 94,060	$ 101,507
Provision	50,787	47,003	51,668
Payments	(44,299)	(53,656)	(59,115)
Warranty reserve, end of year	$ 93,895	$ 87,407	$ 94,060

Fair Value - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total Fair Value Measurement Gain/(Loss)	$ 4,186
Homebuilding [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes carrying value	596,455	$ 595,847
Homebuilding [Member] \| Senior Notes due 2022 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes carrying value	596,455
Homebuilding [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Senior Notes due 2022 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes fair value	612,000
Mortgage Banking [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of mortgage loans held for sale	351,958	319,553
Mortgage Banking [Member] \| Level 2 [Member] \| Not Designated as Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment income (expense)	(3,147)	$ 3,508	$ 3,305
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of contractual commitments	$ 458,161
Average basis points of loan amount	1.06%
Fallout rate of measuring fair value of rate lock commitments	13.00%
Total Fair Value Measurement Gain/(Loss)	$ 2,076
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Forward Sales Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of contractual commitments	738,637
Total Fair Value Measurement Gain/(Loss)	8,064
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Mortgages Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount of contractual commitments	357,912
Fair value of mortgage loans held for sale	351,958
Total Fair Value Measurement Gain/(Loss)	$ (5,954)

Fair Value - Undesignated Derivative Instruments (Detail) - Mortgage Banking [Member] - Level 2 [Member] - Fair Value, Measurements, Recurring [Member] $ in Thousands	Dec. 31, 2016 USD ($)
Rate Lock Commitments [Member]
Derivatives Fair Value [Line Items]
Gross assets	$ 5,403
Gross liabilities	3,327
Net rate lock commitments	2,076
Forward Sales Contracts [Member]
Derivatives Fair Value [Line Items]
Gross assets	9,148
Gross liabilities	1,084
Net rate lock commitments	$ 8,064

Fair Value - Fair Value Measurement (Detail) $ in Thousands	12 Months Ended
Fair Value - Fair Value Measurement (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assumed Gain/(Loss) From Loan Sale	$ (277)
Interest Rate Movement Effect	(11,644)
Servicing Rights Value	8,043
Security Price Change	8,064
Total Fair Value Measurement Gain/(Loss)	4,186
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional or Principal Amount	458,161
Assumed Gain/(Loss) From Loan Sale	(339)
Interest Rate Movement Effect	(1,682)
Servicing Rights Value	4,097
Total Fair Value Measurement Gain/(Loss)	2,076
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Forward Sales Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional or Principal Amount	738,637
Security Price Change	8,064
Total Fair Value Measurement Gain/(Loss)	8,064
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Measurements, Recurring [Member] \| Mortgages Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional or Principal Amount	357,912
Assumed Gain/(Loss) From Loan Sale	62
Interest Rate Movement Effect	(9,962)
Servicing Rights Value	3,946
Total Fair Value Measurement Gain/(Loss)	$ (5,954)

Mortgage Loan Losses Allowance - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Mortgage Loan Loss Allowance [Abstract]
Pre-tax charges for loan losses related to mortgage loans sold	$ 2,000	$ 2,700	$ 2,400
Mortgage loan loss allowance	$ 12,700	$ 12,300

Quarterly Results (unaudited) - Quarterly Financial Data and Operating Information (Detail) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016 USD ($) Order Settlements Backlog $ / shares	Sep. 30, 2016 USD ($) Order Settlements Backlog $ / shares	Jun. 30, 2016 USD ($) Order Settlements Backlog $ / shares	Mar. 31, 2016 USD ($) Order Settlements Backlog $ / shares	Dec. 31, 2015 USD ($) Order Settlements Backlog $ / shares	Sep. 30, 2015 USD ($) Order Settlements Backlog $ / shares	Jun. 30, 2015 USD ($) Order Settlements Backlog $ / shares	Mar. 31, 2015 USD ($) Order Settlements Backlog $ / shares	Dec. 31, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares	Dec. 31, 2014 USD ($) $ / shares
Quarterly Financial Information [Line Items]
Net income	$ 150,891	$ 117,392	$ 91,676	$ 65,303	$ 134,004	$ 116,470	$ 93,395	$ 39,058	$ 425,262	$ 382,927	$ 281,630
Diluted earnings per share \| $ / shares	$ 37.80	$ 28.46	$ 22.01	$ 15.79	$ 31.92	$ 27.11	$ 21.91	$ 9.22	$ 103.61	$ 89.99	$ 63.50
New orders (units) \| Order	3,645	3,477	4,324	4,137	3,100	3,258	3,796	3,926
Settlements (units) \| Settlements	4,419	3,922	3,581	3,006	4,010	3,607	3,175	2,534
Backlog, end of period (units) \| Backlog	6,884	7,658	8,103	7,360	6,229	7,139	7,488	6,867
Loans closed	$ 1,201,164	$ 1,055,163	$ 942,407	$ 753,840	$ 1,042,440	$ 951,872	$ 859,403	$ 638,627
Homebuilding [Member]
Quarterly Financial Information [Line Items]
Revenues – homebuilding operations	1,718,527	1,507,451	1,361,741	1,121,504	1,528,084	1,374,467	1,221,111	941,538	$ 5,709,223	$ 5,065,200	$ 4,375,059
Gross profit – homebuilding operations	305,087	265,159	235,372	195,744	289,496	262,795	234,257	159,870
Mortgage Banking [Member]
Quarterly Financial Information [Line Items]
Mortgage banking fees	$ 34,239	$ 30,118	$ 26,442	$ 22,522	$ 27,191	$ 27,884	$ 22,522	$ 16,211	$ 113,321	$ 93,808	$ 69,509