Homebuilding Accrued and Other Liabilities and Financial Services Accounts Payable and Accrued Liabilities - Homebuilding Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Warranty accrual	$ 33,664	$ 31,386	$ 28,262	$ 21,909
Homebuilding Segment
Segment Reporting Information [Line Items]
Accrued compensation and related expenses	56,682	45,003
Customer and escrow deposits	67,022	39,001
Warranty accrual	33,664	31,386
Operating lease liability	30,221	30,830
Accrued interest	27,650	27,734
Construction defect claim reserves	8,479	8,196
Land development and home construction accruals	10,824	9,750
Other accrued liabilities	66,193	54,040
Total accrued and other liabilities	$ 300,735	$ 245,940