Real Estate Inventories and Capitalized Interest - Interest Incurred, Capitalized, and Expensed (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Real Estate [Abstract]
Interest incurred	$ 6,401	$ 1,689	$ 8,437	$ 2,970
Interest capitalized to inventory	(5,878)	(1,689)	(7,750)	(2,970)
Interest Capitalized to Investments in Unconsolidated Joint Ventures	(523)	0	(687)	0
Interest expense	0	0	0	0
Capitalized Interest [Roll Forward]
Capitalized interest in beginning inventory	6,663	4,823	6,342	4,190
Interest capitalized as a cost of inventory	5,878	1,689	7,750	2,970
Previously capitalized interest included in cost of sales	(1,720)	(1,063)	(3,271)	(1,711)
Capitalized interest in ending inventory	10,821	5,449	10,821	5,449
Capitalized Interest in Beginning Investments in Unconsolidated Joint Ventures	164	0	0	0
Interest Capitalized to Investments in Unconsolidated Joint Ventures	523	0	687	0
Capitalized Interest in Ending Investments in Unconsolidated Joint Ventures	687	0	687	0
Capitalized Interest in Ending Inventory and Investments in Unconsolidated Joint Ventures	$ 11,508	$ 5,449	$ 11,508	$ 5,449
Capitalized Interest as a Percentage of Inventory	3.00%	1.40%	3.00%	1.40%
Interest included in cost of sales as a percentage of home sales revenue	1.80%	1.30%	2.00%	1.40%
Capitalized Interest As A Percentage Of Investments In And Advances to Unconsolidated Joint Ventures	1.20%	0.00%	1.20%	0.00%