Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Costs and Expenses [Abstract]
Revenue	$ 961,040	$ 714,194	$ 1,789,816	$ 1,291,797
Land and housing	719,672	557,791	1,346,257	1,018,715
General and administrative	49,078	41,037	94,283	74,884
Selling	50,576	41,127	96,265	77,955
Equity in loss (income) from joint venture arrangements	(35)	(3)	(195)	(55)
Interest	452	2,515	1,628	7,215
Total costs and expenses	819,743	642,467	1,538,238	1,178,714
Income before income taxes	141,297	71,727	251,578	113,083
Provision for income taxes	33,690	17,219	59,105	26,829
Net income	$ 107,607	$ 54,508	$ 192,473	$ 86,254
Earnings per common share:
Basic	$ 3.68	$ 1.91	$ 6.60	$ 3.03
Diluted	$ 3.58	$ 1.89	$ 6.43	$ 2.98
Weighted Average Number of Shares Outstanding [Abstract]
Basic	29,271	28,531	29,144	28,504
Diluted	30,093	28,836	29,935	28,920