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Investments (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2022
USD ($)
d
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Schedule of Equity Method Investments        
Equity income of subsidiaries   $ 0 $ 3,583,000  
Proceeds from the exercise of redemption option       $ 105,500,000
Realized gain (loss) on marketable securities   0 0  
Payments to acquire investments   312,000 $ 0  
Debt securities   $ 5,213,000   $ 4,902,000
CF Real Estate Finance Holdings, L.P.        
Schedule of Equity Method Investments        
Equity method investment ownership percentage   27.00%    
Redemption notice, threshold trading days | d 20      
Payment for administrative fees $ 44,000