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Loans Held for Investment - Narrative (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
loan
Dec. 31, 2023
USD ($)
loan
Jan. 01, 2023
USD ($)
Schedule of Investments        
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Interest receivable Interest receivable  
Accrued interest receivable   $ 300,000 $ 1,200,000  
Other commitment   700,000 700,000  
Carrying Value   46,090,502 88,046,795  
Allowance for credit losses   15,702,606 9,703,331  
Interest receivable   274,088 1,241,308  
Payments to acquire held-to-maturity securities   0 10,012,512  
Unfunded Loan Commitment        
Schedule of Investments        
Other commitment   $ 700,000 $ 700,000  
Non-performing        
Schedule of Investments        
Number of non-performing loans | loan   2 2  
Non-performing | Non-accrual        
Schedule of Investments        
Number of loans in default | loan   2 2  
Interest income suspension   $ 5,000,000 $ 4,200,000  
Interest receivable   0 0  
Non-performing        
Schedule of Investments        
Carrying Value   $ 27,300,000 $ 27,100,000  
Accounting Standards Update 2016-13        
Schedule of Investments        
Cumulative effect of adoption of credit loss       $ 700,000
Corporate Debt Securities        
Schedule of Investments        
Payments to acquire held-to-maturity securities $ 10,000,000      
Current interest rate 6.125%