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Borrowings and Subordinated Debentures (Tables) | 9 Months Ended
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Sep. 30, 2021
Debt Disclosure [Abstract] |
Schedule of Borrowings |
|  | September 30, 2021 |  |  | December 31, 2020 |
|  | Outstanding Balance |  |  | Weighted Average Rate |  |  | Outstanding Balance |  |  | Weighted Average Rate |
|  | (dollars in thousands) |
Overnight advances |  | $ | — |  |  |  | 0.00 | % |  | $ | — |  |  |  | 0.00 | %
Advances due within 12 months |  |  | 50,000 |  |  |  | 1.62 | % |  |  | 50,000 |  |  |  | 1.61 | %
Advances due over 12 months through 24 months |  |  | 50,000 |  |  |  | 0.97 | % |  |  | 50,000 |  |  |  | 1.62 | %
Advances due over 24 months through 36 months |  |  | 37,500 |  |  |  | 0.40 | % |  |  | 50,000 |  |  |  | 0.97 | %
Outstanding advances |  | $ | 137,500 |  |  |  | 1.05 | % |  | $ | 150,000 |  |  |  | 1.40 | %
Summary of Financial Data Pertaining to Federal Home Loan Bank Advances | The following is financial data pertaining to FHLB advances:
|  | September 30, 2021 |  |  | December 31, 2020 |
|  | (dollars in thousands) |
Weighted-average interest rate at end of period |  |  | 1.05 | % |  |  | 1.40 | %
Weighted-average interest rate during the period |  |  | 1.20 | % |  |  | 1.42 | %
Average balance of FHLB advances |  | $ | 147,897 |  |  | $ | 156,601 |
Maximum amount outstanding at any month-end |  | $ | 150,000 |  |  | $ | 300,000 |

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