Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues
Total revenues	$ 561,729	$ 379,716	$ 1,495,467	$ 899,855
Cost of revenues
Selling, general, and administrative	(70,975)	(46,165)	(191,130)	(113,597)
Acquisition expense	(58)	(7,205)	(395)	(8,645)
Equity in income of unconsolidated subsidiaries		3,716	14,849	7,648
Other income (expense)	(545)	1,013	(553)	2,274
Income before income tax expense	22,858	15,156	92,468	50,316
Income tax expense	(5,810)	(5,686)	(22,207)	(17,216)
Net income	$ 17,048	$ 9,470	$ 70,261	$ 33,100
Earnings per share:
Basic	$ 0.56	$ 0.37	$ 2.35	$ 1.42
Diluted	$ 0.56	$ 0.37	$ 2.33	$ 1.41
Weighted average common shares outstanding:
Basic	30,232,376	25,445,552	29,885,858	23,038,390
Diluted	30,554,881	25,726,137	30,189,058	23,275,320
Home Sales [Member]
Revenues
Total revenues	$ 552,876	$ 374,935	$ 1,469,871	$ 888,942
Cost of revenues
Cost of revenues	(460,144)	(311,365)	(1,206,924)	(727,577)
Land Sales And Other [Member]
Revenues
Total revenues	1,131	1,826	4,304	6,216
Cost of revenues
Cost of revenues	(1,093)	(2,104)	(3,010)	(4,994)
Homebuilding [Member]
Revenues
Total revenues	554,007	376,761	1,474,175	895,158
Cost of revenues
Cost of revenues	(461,237)	(313,469)	(1,209,934)	(732,571)
Financial Services [Member]
Revenues
Total revenues	7,722	2,955	21,292	4,697
Cost of revenues
Cost of revenues	$ (6,056)	$ (2,450)	$ (15,836)	$ (4,648)