Repurchase Agreements, Loan Participations Sold, Net, Notes Payable, Net, Secured Term Loan, Net, Debt Related to Real Estate Owned, Net, and Acquisition Facility - Summary of Interest Expense and Amortization (Parenthetical) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Securities Loaned And Securities Sold Under Agreement To Repurchase Gross Including Not Subject To Master Netting Arrangement [Abstract]
Amortization of financing costs included in Interest on debt related to real estate owned	$ 22,000	$ 12,000	$ 45,000	$ 12,000