Homebuilding Accrued Liabilities and Financial Services Accounts Payable and Accrued Liabilities - Financial Services Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Insurance reserves	$ 63,881	$ 61,450	$ 60,415	$ 56,817	$ 56,219	$ 55,308
Financial Services:
Segment Reporting Information [Line Items]
Insurance reserves	55,488		52,219
Accounts payable and other accrued liabilities	14,545		16,310
Total accounts payable and accrued liabilities	$ 70,033		$ 68,529