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Variable Interest Entities ("VIEs") - Additional Information (Detail)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
lot
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
lot
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Variable Interest Entity [Line Items]          
Letters of credit related to lots $ 8,307   $ 8,307    
Net Contract Land Deposit Impairment Recoveries 6,900 $ 400 (10,000) $ 6,300  
Loss reserve on contract land deposits 46,401   46,401   $ 57,060
Contract land deposits in cash $ 563,110   563,110   553,140
Contingent obligations in the form of letters of credit         6,896
Contract land deposit recoveries, net     $ (9,999) $ (6,342)  
Contingent obligations in the form of letters of credit         $ 6,896
Variable Interest Entities          
Variable Interest Entity [Line Items]          
Maximum range of deposits required under the purchase agreements 10.00%   10.00%    
Lots controlled by NVR | lot 123,900   123,900    
Contract land deposits in cash under lot purchase Agreements $ 553,300   $ 553,300    
Letters of credit related to lots $ 8,200   $ 8,200    
Contract on Raw Ground with Landowners          
Variable Interest Entity [Line Items]          
Lots controlled by NVR | lot 21,500   21,500    
Contract land deposits in cash $ 9,800   $ 9,800    
Refundable deposits and letters of credit 2,900   2,900    
Contingent obligations in the form of letters of credit 100   100    
Contingent obligations in the form of letters of credit $ 100   $ 100