Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Interest income	$ 94,131			$ 47,747			$ 239,602	$ 138,969
Revenue from real estate owned	2,312			1,015			6,936	2,447
Interest expense	46,157			11,988			101,444	35,994
Net income/(loss)	35,258	$ (25,709)	$ (22,507)	38,495	$ 30,010	$ 30,146	(12,958)	98,651
Total assets	6,178,121						6,178,121		$ 9,474,701
Real Estate Debt and Other Real Estate Investments
Segment Reporting Information [Line Items]
Interest income	91,097			47,166			209,585	135,945
Revenue from real estate owned	0			0			0	0
Interest expense	43,260			11,263			92,704	34,887
Net income/(loss)	35,778			25,056			46,306	74,745
Total assets	5,551,679						5,551,679		4,205,883
Real Estate Securities
Segment Reporting Information [Line Items]
Interest income	1,648			0			25,424	461
Revenue from real estate owned	0			0			0	0
Interest expense	1,779			148			6,853	(720)
Net income/(loss)	(3,309)			(148)			(63,533)	(196)
Total assets	398,684						398,684		5,054,394
TRS
Segment Reporting Information [Line Items]
Interest income	1,386			581			4,593	2,563
Revenue from real estate owned	0			0			0	0
Interest expense	786			232			1,123	812
Net income/(loss)	2,107			3,984			1,995	13,434
Total assets	87,825						87,825		72,840
Real Estate Owned
Segment Reporting Information [Line Items]
Interest income	0			0			0	0
Revenue from real estate owned	2,312			1,015			6,936	2,447
Interest expense	332			345			764	1,014
Net income/(loss)	682			$ 9,603			2,274	$ 10,667
Total assets	$ 139,933						$ 139,933		$ 141,584