Homebuilding Accrued and Other Liabilities and Financial Services Accounts Payable and Accrued Liabilities - Homebuilding Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Warranty accrual	$ 33,873	$ 33,664	$ 30,887	$ 31,386
Lease liability		30,372
Homebuilding:
Segment Reporting Information [Line Items]
Customer and escrow deposits	82,824	67,022
Income taxes payable	43,057	8,285
Accrued compensation and related expenses	41,541	56,682
Warranty accrual	33,873	33,664
Lease liability	29,734	30,221
Accrued interest	16,110	27,650
Land development and home construction accruals	12,258	10,824
Construction defect claim reserves	8,744	8,479
Other accrued liabilities	65,739	57,908
Accrued and other liabilities	$ 333,880	$ 300,735