Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Costs and Expenses [Abstract]
Revenue	$ 481,109	$ 437,857
Land and housing	388,467	348,702
General and administrative	30,699	27,951
Selling	31,551	30,063
Acquisition and integration costs	0	1,700
Equity in loss (income) from joint venture arrangements	121	(310)
Interest	6,792	5,878
Total costs and expenses	457,630	413,984
Income before income taxes	23,479	23,873
Provision for income taxes	5,756	5,810
Net income	$ 17,723	$ 18,063
Earnings per common share:
Basic	$ 0.64	$ 0.64
Diluted	$ 0.63	$ 0.60
Weighted Average Number of Shares Outstanding [Abstract]
Basic	27,498	28,124
Diluted	27,970	30,544