XML 89 R74.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Commitments and Contingent Liabilities - Additional Information (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) Lot Contract | Dec. 31, 2014 USD ($) Lot | Dec. 31, 2013 USD ($)
Commitments And Contingencies Disclosure [Abstract] |  |  |  |
Rent expense under operating leases |  | $ 48,056 | $ 45,508 | $ 39,608
Maximum range of deposits required under the purchase agreements |  | 10.00% |  |
Term of business plan |  | 5 years |  |
Contingent forfeitable deposits with land developers |  | $ 94,200 |  |
Number of specific performance contracts | Contract |  | 1 |  |
Finished lots committed to purchase under specific performance obligations | Lot |  | 10 | 10 |
Purchase price of finished lots committed to purchase under specific performance obligations | [1] | $ 1,505 | $ 1,505 |
Aggregate additional funding commitments related to raw land property development |  | 19,200 |  |
Expected development credit offset amount |  | 9,600 |  |
Contingent obligations under bonds or letters of credit arrangements |  | 58,300 |  |
Contingent obligations under letters of credit arrangements |  | $ 11,900 |  |
Warranty reserve provision including accrual charges |  |  |  | 31,600
Warranty accrual related to a single completed community |  |  |  | 15,600
Warranty accrual for a non-recurring service issue |  |  |  | $ 16,000
[1] | As of both December 31, 2015 and 2014, the Company was committed to purchase 10 finished lots under specific performance obligations.

X
- Definition Aggregate additional funding commitments related to raw land property development. + References No definition available. + Details
Name: | nvr_AggregateAdditionalFundingCommitmentsRelatedToRawLandPropertyDevelopment
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amounts represent required payments of forfeitable deposits with land developers under existing, fixed price purchase agreements, assuming that contractual development milestones are met by the developers. + References No definition available. + Details
Name: | nvr_ContingentForfeitableDepositsWithLandDevelopers
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contingent obligations under bond or letter of credit arrangements with local municipalities, government agencies, or land developers + References No definition available. + Details
Name: | nvr_ContingentObligationsUnderBondOrLetterOfCreditArrangements
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contingent specific performance obligations. + References No definition available. + Details
Name: | nvr_ContingentSpecificPerformanceObligations
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Costs accrued for warranty contracts related to nonrecurring service issues. + References No definition available. + Details
Name: | nvr_CostsAccruedForWarrantyContractsRelatedToNonrecurringServiceIssues
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Costs accrued for warranty contracts related to water infiltration and nonrecurring service issues. + References No definition available. + Details
Name: | nvr_CostsAccruedForWarrantyContractsRelatedToWaterInfiltrationAndNonrecurringServiceIssues
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Costs accrued for warranty contracts related to water infiltration issues. + References No definition available. + Details
Name: | nvr_CostsAccruedForWarrantyContractsRelatedToWaterInfiltrationIssues
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Expected development credit offset amount. + References No definition available. + Details
Name: | nvr_ExpectedDevelopmentCreditOffsetAmount
Namespace Prefix: | nvr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Finished lots committed to purchase under specific performance obligations. + References No definition available. + Details
Name: | nvr_FinishedLotsCommittedToPurchase
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum percentage of deposits required under the purchase agreements. + References No definition available. + Details
Name: | nvr_MaximumPercentageOfDepositsRequiredUnderPurchaseAgreements
Namespace Prefix: | nvr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of specific performance contracts. + References No definition available. + Details
Name: | nvr_NumberOfSpecificPerformanceContracts
Namespace Prefix: | nvr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of business plan. + References No definition available. + Details
Name: | nvr_TermOfBusinessPlan
Namespace Prefix: | nvr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
Name: | us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration