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Borrowed Funds - Senior term loan (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 31, 2022 | Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Secured Borrowings |  |  |  |
Senior term loan |  | $ 9,647 | $ 9,765 |
Senior Loans |  |  |  |
Secured Borrowings |  |  |  |
Senior term loan |  |  | 9,647 | $ 9,765
Average balance during the year |  | 9,765 | 2,328 |
Maximum month-end balance |  | $ 9,768 | $ 9,886 |
Weighted-average rate during the period |  | 8.06% | 7.00% |
Weighted-average rate at end of period |  | 8.27% | 7.44% |
Senior Loans | Raymond James Senior Term Loan |  |  |  |
Secured Borrowings |  |  |  |
Face amount of debt issued | $ 10,000 |  |  |
Upfront fee (as a percent) | 1.00% |  |  |
Senior Loans | Raymond James Senior Term Loan | First year |  |  |  |
Secured Borrowings |  |  |  |
Periodic principal payment | $ 125 |  |  |
Senior Loans | Raymond James Senior Term Loan | Thereafter |  |  |  |
Secured Borrowings |  |  |  |
Periodic principal payment | $ 250 |  |  |
Senior Loans | Raymond James Senior Term Loan | SOFR |  |  |  |
Secured Borrowings |  |  |  |
Base rate | 2.75% |  |  |

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