Segment Information, Nature of Operations, and Certain Concentrations - Interest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	$ 27,740	$ 39,524	$ 53,117
Home Building
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	26,875	38,140	51,530
Mortgage Banking
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	865	1,384	1,587
Profit before taxes:
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	289,796	304,433	254,511
Profit before taxes: | Home Building | Mid Atlantic
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	135,679	143,322	124,385
Profit before taxes: | Home Building | North East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	33,310	30,658	25,463
Profit before taxes: | Home Building | Mid East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	39,021	51,384	43,695
Profit before taxes: | Home Building | South East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	80,921	77,685	59,381
Profit before taxes: | Mortgage Banking
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	865	1,384	1,587
Reconciling items:
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	26,749	37,995	51,393
Corporate capital allocation charge	$ (288,805)	$ (302,904)	$ (252,787)