Segment Disclosures - Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 2,378,409	$ 2,041,446
Home Building Segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,309,227	1,963,711
Home Building Segment \| Mid Atlantic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,141,708	936,141
Home Building Segment \| North East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	175,551	162,193
Home Building Segment \| Mid East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	461,405	424,952
Home Building Segment \| South East
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	530,563	440,425
Mortgage Banking
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 69,182	$ 77,735

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details