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Loans Held for Investment - Narratives - Allowance for loan losses (Details)
12 Months Ended
Dec. 31, 2022
USD ($)
Loans
numberOfAgreements
Dec. 31, 2021
USD ($)
numberOfAgreements
Loans
Loans and Financing Receivable    
Number of loans with a loan risk rating | Loans 31 21
Provision for loan losses | $ $ 11,813,409 $ 10,904,163
Number of contracts | Loans 2 1
Suspended interest income accrual | $ $ 8,500,000 $ 3,600,000
Number of contract suspended | numberOfAgreements 3 3
Specific Allowance    
Loans and Financing Receivable    
Provision for loan losses | $ $ 11,800,000 $ 10,300,000
General Allowance    
Loans and Financing Receivable    
Provision for loan losses | $   $ 600,000
4    
Loans and Financing Receivable    
Number of loans with a loan risk rating | Loans 0 1
5    
Loans and Financing Receivable    
Number of loans with a loan risk rating | Loans 0 0