Segment Information - Summary of Total Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Segment Total Assets [Line Items]
Total assets	$ 557,392	$ 542,352
Total Real Estate
Segment Total Assets [Line Items]
Total assets	473,060	473,645
Mortgage
Segment Total Assets [Line Items]
Total assets	32,248	20,161
Marketing Funds fees
Segment Total Assets [Line Items]
Total assets	48,728	41,090
Other
Segment Total Assets [Line Items]
Total assets	$ 3,356	$ 7,456