Homebuilding Prepaid and Other Assets - Summary of Homebuilding Prepaid and Other Assets (Details) - Homebuilding: - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule of Prepaid Expenses and Other Assets [Line Items]
Operating lease right-of-use asset	$ 30,653	$ 30,277
Land option deposits	25,925	27,361
Prepaid expenses	10,070	7,294
Goodwill	6,008	6,008
Deferred debt issuance costs on revolving credit facility, net	4,980	6,130
Other	785	1,288
Total assets	$ 78,421	$ 78,358