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Loans Held for Investment - Narratives - Allowance for loan losses (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 USD ($) Loans | Sep. 30, 2020 USD ($) Loans | Sep. 30, 2021 USD ($) Loans | Sep. 30, 2020 USD ($) Loans | Dec. 31, 2020 Loans
Loans and Financing Receivable |  |  |  |  |
Number Of Loans | Loans | 19 |  | 19 |  | 20
Financing Receivable, Credit Loss, Expense (Reversal) |  |  | $ (400,000) |  |
Provision for loan losses | $ 716,164 | $ 42,443 | 1,565,245 | $ 1,356,737 |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | Loans |  |  |  |  | 1
Interest non-accrual | 1,100,000 | 0 | 2,400,000 | 0 |
Specific Allowance |  |  |  |  |
Loans and Financing Receivable |  |  |  |  |
Provision for loan losses | $ 700,000 |  | $ 2,000,000 |  |
General Allowance |  |  |  |  |
Loans and Financing Receivable |  |  |  |  |
Provision for loan losses |  | $ 40,000.00 |  | $ 1,400,000 |
4 |  |  |  |  |
Loans and Financing Receivable |  |  |  |  |
Number Of Loans | Loans | 1 | 5 | 1 | 5 | 3
5 |  |  |  |  |
Loans and Financing Receivable |  |  |  |  |
Number Of Loans | Loans | 0 |  | 0 |  | 1

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