Summary of Significant Accounting Policies - Basis of Presentation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Basis of Presentation
Homebuilding Expenses	$ 625,471	$ 405,538	$ 198,885
Selling, general and administrative expenses	100,219	79,586	50,305
Prepaid expenses and other assets	11,581	17,144
Senior debt, net	$ 275,660	320,846
Restatement Adjustment
Basis of Presentation
Homebuilding Expenses		(62,700)	(34,400)
Selling, general and administrative expenses		62,700	$ 34,400
Restatement Adjustment | Accounting Standards Update No. 2015-03, Interest-Imputation of Interest
Basis of Presentation
Prepaid expenses and other assets		5,900
Senior debt, net		$ (5,900)