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Real Estate Securities - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2025
USD ($)
Investment
Mar. 31, 2024
USD ($)
Dec. 31, 2024
USD ($)
Investment
Dec. 31, 2023
USD ($)
Debt and Equity Securities, FV-NI [Line Items]        
Net unrealized gain on available-for-sale ("AFS") securities $ 3,422 $ 8,656    
Number of AFS securities (in investments) | Investment 88   90  
Number of securities in unrealized loss position | Investment 19   20  
Number of securities in a continuous unrealized loss position for twelve consecutive months or longer (in investments) | Investment 11   11  
Allowance for credit loss $ 854 $ 1,853 $ 921 $ 2,482
Sales        
Debt and Equity Securities, FV-NI [Line Items]        
Gross realized gains 1,000      
Residential        
Debt and Equity Securities, FV-NI [Line Items]        
AFS securities, contractual maturities, less than five years 49,000      
Marketable securities, due from five to ten years $ 5,000