Segment Reporting - SG&A (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Segment Reporting - SG&A (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Mortgage Banking
Segment Reporting, Other Significant Reconciling Item [Line Items]
Selling, General, And Administrative Expense, Adjusted	$ (25,216)	$ (24,149)	$ (48,723)	$ (46,865)
Mid Atlantic \| Home Building Segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Selling, General, And Administrative Expense, Adjusted	(37,172)	(36,656)	(74,728)	(74,839)
North East \| Home Building Segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Selling, General, And Administrative Expense, Adjusted	(11,833)	(11,680)	(22,534)	(22,703)
Mid East \| Home Building Segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Selling, General, And Administrative Expense, Adjusted	(20,734)	(19,977)	(40,430)	(38,268)
South East \| Home Building Segment
Segment Reporting, Other Significant Reconciling Item [Line Items]
Selling, General, And Administrative Expense, Adjusted	$ (40,943)	$ (34,397)	$ (78,928)	$ (65,629)

NVR INC 10-Q