Repurchase Agreements, Loan Participations Sold, Notes Payable and Secured Term Loan, Net - Summary of Debt Related To Real Estate Owned (Details) - USD ($) $ in Thousands		1 Months Ended		12 Months Ended
		Jan. 31, 2022	Jun. 02, 2021	Dec. 31, 2021		Dec. 31, 2020	[2]
Debt Instrument Real Estate Owned Net [Line Items]
Contractual Maturity Date		Jul. 05, 2022	Feb. 09, 2024
Carrying value				$ 167,744	[1]	$ 516,484
Real Estate Investment
Debt Instrument Real Estate Owned Net [Line Items]
Contractual Maturity Date				Feb. 09, 2024
Stated	[3]			L + 2.78%
Debt Instrument Interest Rate				3.53%
Debt Instrument Real Estate Owned Net Face Amount				$ 290,000
Carrying value				$ 289,806

[1] This financing has a LIBOR floor of 1.85%.

[2] Weighted average interest rate as of December 31, 2020 was 5.09%. Weighted average is based on outstanding principal as of December 31, 2020.

[3] One-month LIBOR at December 31, 2021 was 0.10%.  This financing has a LIBOR floor of 0.75%.