Repurchase Agreements, Loan Participations Sold, Notes Payable and Secured Term Loan, Net - Summary of Liability Under Repurchase Agreements (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020
Repurchase Agreement Counterparty [Line Items]
Weighted Average Interest Rate(4)	5.40%	[1]	6.57%	[2]
LIBOR floor	0.25%		0.35%
London Interbank Offered Rate (LIBOR)
Repurchase Agreement Counterparty [Line Items]
Weighted Average Interest Rate(4)	2.16%		2.17%
LIBOR floor	0.10%		0.14%

[1] Reflects the weighted average interest rate based on the applicable floating benchmark rate (if applicable), including LIBOR floors (if applicable). Weighted average is based on outstanding principal as of December 31, 2021.

[2] Reflects the weighted average interest rate based on the applicable floating benchmark rate (if applicable), including LIBOR floors (if applicable). Weighted average is based on outstanding principal as of December 31, 2020.