Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Total revenues	$ 531,892	$ 291,824	$ 933,740	$ 520,140
Homebuilding cost of revenues
Cost of home sales revenues	(427,197)	(233,888)	(746,780)	(416,212)
Cost of land sales and other revenues	(1,040)	(1,746)	(1,917)	(2,890)
Homebuilding cost of revenues	(428,237)	(235,634)	(748,697)	(419,102)
Financial services costs	(5,385)	(1,445)	(9,781)	(2,199)
Selling, general, and administrative	(63,634)	(34,220)	(120,156)	(67,432)
Acquisition expense	(165)	(916)	(338)	(1,439)
Equity in income of unconsolidated subsidiaries	11,681	2,676	14,849	3,931
Other income (expense)	350	824	(8)	1,261
Income (loss) before income tax expense	46,502	23,109	69,609	35,160
Income tax expense	(13,309)	(8,278)	(16,397)	(11,530)
Net income	$ 33,193	$ 14,831	$ 53,212	$ 23,630
Earnings per share:
Basic	$ 1.11	$ 0.67	$ 1.79	$ 1.07
Diluted	$ 1.10	$ 0.66	$ 1.77	$ 1.06
Weighted average common shares outstanding:
Basic	29,901,791	22,146,124	29,709,728	21,814,860
Diluted	30,170,689	22,366,077	30,003,276	22,029,962
Home Sales [Member]
Revenues
Total revenues	$ 522,164	$ 287,588	$ 916,995	$ 514,008
Land Sales And Other [Member]
Revenues
Total revenues	1,714	2,493	3,174	4,389
Homebuilding [Member]
Revenues
Total revenues	523,878	290,081	920,169	518,397
Financial Services [Member]
Revenues
Total revenues	$ 8,014	$ 1,743	$ 13,571	$ 1,743