Fair Value Measurements - Impact of Change in Fair Value on Each of the Financial Instruments Carried at Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized loss for contingent earn-out liability	$ 1,100	$ 0
Non-Agency RMBS \| Senior
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	226	197
Non-Agency RMBS \| Subordinated
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	1,283	3,304
Non-Agency RMBS \| Interest-only
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	9,835	(8,654)
Agency RMBS \| Interest-only
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	(604)	(409)
Agency RMBS \| Pass-through
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	(731)	0
Agency RMBS \| Agency RMBS - CMO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	1,467	0
Agency CMBS \| Interest-only
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	369	(455)
Agency CMBS \| Project loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	639	3,075
Loans held for investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	151,931	74,026
Secured Financing Agreements, at fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	(6,174)	7,024
Securitized debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain/(Loss) on Change in Fair Value	$ (28,247)	$ (1,343)

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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