Segment Information, Nature of Operations, and Certain Concentrations - Interest Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	$ 39,524	$ 53,117	$ 40,872
Home Building
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	38,140	51,530	39,458
Mortgage Banking
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	1,384	1,587	1,414
Profit before taxes:
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	304,433	254,511	240,749
Profit before taxes: | Home Building | Mid Atlantic
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	143,322	124,385	124,486
Profit before taxes: | Home Building | North East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	30,658	25,463	22,859
Profit before taxes: | Home Building | Mid East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	51,384	43,695	40,261
Profit before taxes: | Home Building | South East
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	77,685	59,381	51,729
Profit before taxes: | Mortgage Banking
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	1,384	1,587	1,414
Reconciling items:
Segment Reporting, Other Significant Reconciling Item [Line Items]
Consolidated interest expense	37,995	51,393	39,356
Corporate capital allocation charge	$ (302,904)	$ (252,787)	$ (239,233)