Capitalization of Interest - Interest Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Debt Disclosure [Abstract]
Homebuilding interest incurred	$ 19,108	$ 14,799	$ 53,849	$ 46,427
Less: Interest capitalized	(19,108)	(14,799)	(53,849)	(46,427)
Homebuilding interest expensed	0	0	0	0
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]
Interest capitalized, beginning of period	54,351	56,929	52,777	55,310
Plus: Interest capitalized during period	19,108	14,799	53,849	46,427
Less: Previously capitalized interest included in home cost of sales	(16,024)	(16,511)	(49,191)	(46,520)
Interest capitalized, end of period	$ 57,435	$ 55,217	$ 57,435	$ 55,217