Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Costs and Expenses [Abstract]
Revenue	$ 1,046,371	$ 1,012,928	$ 3,060,914	$ 2,914,393
Land and housing	764,638	741,013	2,286,371	2,145,082
General and administrative	55,867	58,247	162,481	162,246
Selling	53,735	46,373	154,686	134,000
Other expense (income)	1	0	(34)	(17)
Interest income	(5,834)		(11,893)
Interest expense		701		2,065
Total costs and expenses	868,407	846,334	2,591,611	2,443,376
Income before income taxes	177,964	166,594	469,303	471,017
Provision for income taxes	38,948	35,004	109,220	110,750
Net income	$ 139,016	$ 131,590	$ 360,083	$ 360,267
Earnings per common share:
Basic	$ 4.98	$ 4.76	$ 12.97	$ 12.86
Diluted	$ 4.82	$ 4.67	$ 12.58	$ 12.59
Weighted Average Number of Shares Outstanding [Abstract]
Basic	27,909	27,618	27,769	28,025
Diluted	28,837	28,185	28,631	28,610