Investments in Real Estate Debt - Summary of Investments in Real Estate Debt (Details) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2022 USD ($) Position	Dec. 31, 2021 USD ($) Position
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position		58	56
Weighted Average Coupon	[1]	4.63%	4.41%
Weighted Average Maturity Date	[2]	Jun. 02, 2033	Apr. 08, 2033
Cost Basis		$ 1,071,141	$ 969,590
Investments in real estate debt		$ 1,031,340	$ 954,077
RMBS
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position		49	50
Weighted Average Coupon	[1]	3.12%	3.07%
Weighted Average Maturity Date	[2]	Nov. 07, 2045	Jul. 09, 2045
Cost Basis		$ 157,991	$ 165,600
Investments in real estate debt		$ 156,659	$ 168,309
CMBS - floating, March 15, 2035
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position		3	4
Weighted Average Coupon	[1]	5.31%	3.46%
Weighted Average Maturity Date	[2]	Mar. 15, 2035	Jul. 15, 2038
Cost Basis		$ 109,175	$ 296,928
Investments in real estate debt		$ 109,124	$ 295,465
CMBS - floating, July 15, 2038
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position		4
Weighted Average Coupon	[1]	3.46%
Weighted Average Maturity Date	[2]	Jul. 15, 2038
Cost Basis		$ 296,928
Investments in real estate debt		$ 288,942
Real Estate Securities
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position		57	55
Weighted Average Coupon	[1]	3.92%	3.34%
Weighted Average Maturity Date	[2]	Sep. 19, 2039	Jan. 05, 2041
Cost Basis		$ 566,601	$ 465,050
Investments in real estate debt		$ 557,346	$ 466,475
Term Loan
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position	[3]	1	1
Weighted Average Coupon	[1],[3]	5.35%	5.35%
Weighted Average Maturity Date	[2],[3]	Feb. 26, 2026	Feb. 26, 2026
Cost Basis	[3]	$ 504,540	$ 504,540
Investments in real estate debt	[3]	$ 473,994	$ 487,602
CMBS - fixed
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Number of Positions | Position		1	1
Weighted Average Coupon	[1]	6.26%	6.26%
Weighted Average Maturity Date	[2]	Jul. 25, 2039	Jul. 25, 2039
Cost Basis		$ 2,507	$ 2,522
Investments in real estate debt		$ 2,621	$ 2,701

[1] The term “L” refers to the relevant benchmark rates, which include one-month LIBOR, one-month SOFR and SONIA, as applicable to each security and loan.

[2] Weighted average maturity date is based on the fully extended maturity date of the underlying collateral.

[3] On February 26, 2021, the Company provided financing in the form of a term loan to an unaffiliated entity in connection with its acquisition of a premier United Kingdom holiday company. The loan is in the amount of £360 million and has an initial term of five years, with a two-year extension option. The loan is pre-payable at the option of the borrower at any time.