Segment Information, Nature of Operations, and Certain Concentrations - Revenues (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	$ 9,518,202	$ 10,526,434	$ 8,951,025
Home Building
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	9,314,605	10,326,770	8,701,693
Home Building | Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	4,189,957	4,766,329	4,049,871
Home Building | North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	948,289	892,543	767,828
Home Building | Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	1,723,514	2,147,262	1,891,729
Home Building | South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	2,452,845	2,520,636	1,992,265
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Consolidated revenues	$ 203,597	$ 199,664	$ 249,332