XML 37 R21.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Mortgage Repurchase Reserve | 12 Months Ended
--- | ---
Dec. 31, 2017
Mortgage Repurchase Reserve [Abstract] |
Mortgage Repurchase Reserve | Mortgage Repurchase Reserve During the years ended December 31, 2017, 2016 and 2015, the Company recognized pre-tax charges for loan losses related to mortgage loans sold of approximately $2,900, $2,000 and $2,700, respectively. Included in the Mortgage Banking segment’s “Accounts payable and other liabilities” line item on the accompanying consolidated balance sheets is a mortgage repurchase reserve equal to approximately $14,000 and $12,700 at December 31, 2017 and 2016, respectively.

X
- Definition Mortgage Repurchase Reserve [Abstract] + References No definition available. + Details
Name: | nvr_MortgageRepurchaseReserveAbstract
Namespace Prefix: | nvr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mortgage Repurchase Reserve + References No definition available. + Details
Name: | nvr_MortgageRepurchaseReserveTextBlock
Namespace Prefix: | nvr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration