Segment Information, Nature of Operations, and Certain Concentrations - Corporate Capital Allocation Charge (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Corporate Reconciling Items And Eliminations [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	$ (288,805)	$ (302,904)	$ (252,787)
Corporate Reconciling Items And Eliminations [Member] | Home Building | Mid Atlantic
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(135,618)	(143,251)	(124,316)
Corporate Reconciling Items And Eliminations [Member] | Home Building | North East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(33,269)	(30,623)	(25,431)
Corporate Reconciling Items And Eliminations [Member] | Home Building | Mid East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(39,005)	(51,376)	(43,686)
Corporate Reconciling Items And Eliminations [Member] | Home Building | South East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	(80,913)	(77,654)	(59,354)
Reconciling items:
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate capital allocation charge	$ (288,805)	$ (302,904)	$ (252,787)