Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenue	$ 3,046,145	$ 2,500,290	$ 2,286,282
Land and Housing	2,361,367	2,005,861	1,836,704
Impairment of inventory and investment in joint venture arrangements	8,435	5,002	5,809
General and administrative	177,547	147,954	137,779
Selling	179,535	154,384	142,829
Acquisition and integration costs	0	0	1,700
Equity in income from joint venture arrangements	(466)	(311)	(312)
Interest	9,684	21,375	20,484
Total costs and expenses	2,736,102	2,334,265	2,144,993
Income before income taxes	310,043	166,025	141,289
Provision (benefit) from income taxes	70,169	38,438	33,626
Net income	$ 239,874	$ 127,587	$ 107,663
Earnings per common share:
Basic	$ 8.38	$ 4.58	$ 3.81
Diluted	$ 8.23	$ 4.48	$ 3.70
Weighted average shares outstanding:
Basic	28,610	27,846	28,234
Diluted	29,152	28,475	29,178