Repurchase Agreements, Loan Participations Sold, Notes Payable and Secured Term Loan, Net - Summary of Loan Participations Sold (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020
Loan Participations Sold [Line Items]
Weighted Average Interest Rate(4)	5.40%	[1]	6.57%	[2]
LIBOR floor	0.25%		0.35%
London Interbank Offered Rate (LIBOR)
Loan Participations Sold [Line Items]
Weighted Average Interest Rate(4)	2.16%		2.17%
LIBOR floor	0.10%		0.14%
Variable Loan [Member] | London Interbank Offered Rate (LIBOR)
Loan Participations Sold [Line Items]
Weighted Average Interest Rate(4)	5.43%
Variable Loan One | London Interbank Offered Rate (LIBOR)
Loan Participations Sold [Line Items]
Weighted Average Interest Rate(4)			5.09%

[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.