Segment Information - Summary of Total Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Total Assets [Line Items]
Total assets	$ 776,133	$ 546,368
Real Estate
Segment Total Assets [Line Items]
Total assets	674,034	462,036
Marketing Funds fees
Segment Total Assets [Line Items]
Total assets	63,313	48,728
Mortgage
Segment Total Assets [Line Items]
Total assets	38,359	32,248
Other.
Segment Total Assets [Line Items]
Total assets	$ 427	$ 3,356