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Variable Interest Entities and Joint Ventures (Details Textual) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2011 JointVenture Lot | Jun. 30, 2011 | Dec. 31, 2010 JointVenture Lot
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Variable Interest Entities and Joint Ventures [Line Items] |  |  |
Aggregate investment | $ 89,500 |  | $ 37,200
Variable Interest Entities and Joint Ventures (Textual) [Abstract] |  |  |
Maximum range of deposits required under the purchase agreements | 10.00% |  |
Power of developer's equity holders to direct operating activities of the development entity | 100.00% |  |
Lots controlled by NVR | 48,200 |  |
Cash deposited related to lots | 202,300 |  |
Letters of credit related to lots | 3,200 |  |
Finished lots committed to purchase under specific performance obligations | 92 |  | 43
Investment in an unconsolidated joint venture |  | 61,250 |
Interest in an unconsolidated joint venture |  | 50.00% |
Total lots under contract with NVR under the joint venture | 2,800 |  |
Lots controlled under an unconsolidated joint venture | 5,500 |  |
Total lots under not under contract with NVR under the joint venture | 2,700 |  |
Parcels of land from entities controlled by a joint venture investment | 9 |  |
Number of Joint Ventures | 4 |  | 3
Expected production of finished lots | 6,700 |  |
Number of Joint Ventures NVR is Not Primary Beneficiary | 3 |  | 2
Additional funding commitments in the aggregate | 5,000 |  | 5,000
Finished lots expected under unconsolidated joint ventures |  |  | 1100
NVRM - Other assets [Member] |  |  |
Variable Interest Entities and Joint Ventures [Line Items] |  |  |
Aggregate investment | $ 75,300 |  |

X
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- Definition Cash deposited related to lots. + References No definition available. + Details
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- Definition Expected production of finished lots from joint ventures. + References No definition available. + Details
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- Definition Number of finished lots expected to be produced by unconsolidated joint ventures. + References No definition available. + Details
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- Definition Interest in an unconsolidated joint venture. + References No definition available. + Details
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- Definition Investment in an unconsolidated joint venture. + References No definition available. + Details
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- Definition Lots not under contract with the Company held under the joint venture at a geographic location. + References No definition available. + Details
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- Definition Lots under contract with the Company held under the joint venture at a geographic location. + References No definition available. + Details
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- Definition Letters of credit related to lots. + References No definition available. + Details
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- Definition Lots controlled by NVR. + References No definition available. + Details
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- Definition Lots controlled under an unconsolidated joint venture. + References No definition available. + Details
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- Definition Maximum percentage of deposits required under the purchase agreements. + References No definition available. + Details
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- Definition Power of developer's equity holders to direct operating activities of the development entity. + References No definition available. + Details
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- Details
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- 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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