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Joint Ventures - Additional Information (Detail) $ in Thousands | Jun. 30, 2017 USD ($) Lot JointVenture | Dec. 31, 2016 USD ($)
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Joint Ventures [Line Items] |  |
Aggregate investment | $ | $ 44,000 |
Number of joint ventures | JointVenture | 6 |
Expected production of finished lots | Lot | 7,350 |
Total lots controlled by company under the joint venture | Lot | 4,050 |
Total lots either under contract with unrelated parties or not under the current contract | Lot | 3,300 |
Additional funding commitments in the aggregate | $ | $ 5,800 |
Number of joint ventures with additional funding commitment | JointVenture | 3 |
Number of joint ventures NVR is not primary beneficiary | JointVenture | 5 |
Other Assets [Member] |  |
Joint Ventures [Line Items] |  |
Aggregate investment | $ | $ 43,600 | $ 49,000

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- Definition The number of joint ventures to which NVR has an additional funding commitment. + References No definition available. + Details
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- Definition Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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