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Real Estate Securities - Additional Information (Details)
6 Months Ended
Jun. 30, 2024
USD ($)
Investment
Jun. 30, 2023
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Investment
Debt and Equity Securities, FV-NI [Line Items]        
Number of AFS securities (in investments) | Investment 76     66
Number of securities in unrealized loss position | Investment 16     21
Number of securities in a continuous unrealized loss position for twelve consecutive months or longer (in investments) | Investment 12     19
Gross unrealized losses $ 5,349,000     $ 6,753,000
CECL allowance 1,339,000   $ 1,853,000 2,482,000
Sales        
Debt and Equity Securities, FV-NI [Line Items]        
Gross realized gains 0 $ 1,000,000    
Residential        
Debt and Equity Securities, FV-NI [Line Items]        
AFS securities, contractual maturities, less than five years 26,000,000      
Marketable securities, due from five to ten years 4,000,000      
CECL allowance $ 19,019,000   $ 19,717,000 $ 23,436,000