Segment Information, Nature of Operations, and Certain Concentrations - Corporate Capital Allocation Charge (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	$ (302,904)	$ (252,787)	$ (239,233)
Corporate Reconciling Items And Eliminations [Member] | Home Building | Mid Atlantic
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(143,251)	(124,316)	(124,426)
Corporate Reconciling Items And Eliminations [Member] | Home Building | North East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(30,623)	(25,431)	(22,850)
Corporate Reconciling Items And Eliminations [Member] | Home Building | Mid East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(51,376)	(43,686)	(40,256)
Corporate Reconciling Items And Eliminations [Member] | Home Building | South East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(77,654)	(59,354)	(51,701)
Reconciling items:
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	$ (302,904)	$ (252,787)	$ (239,233)