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Share-based Compensation and Employee Benefit Plan - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 45 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Nov. 20, 2022 | Dec. 31, 2011
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Salaries and benefits | $ 4,833,000 | $ 4,330,000 | $ 13,761,000 | $ 11,439,000 |  |  |
Payments of ordinary dividends, common stock |  |  |  |  | $ 0 |  |
Employer matching contribution, match |  |  | 50.00% |  |  |  |
Employer matching contribution, percent of employees' gross pay |  |  | 6.00% |  |  |  |
Defined contribution plan, cost | 71,000 | 64,000 | $ 228,000 | 205,000 |  |  |
Restricted Stock |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Cost not yet recognized, amount | $ 203,000 |  | $ 203,000 |  | $ 203,000 |  |
Cost not yet recognized, period for recognition |  |  | 2 years 3 months 18 days |  |  |  |
2012 Stock Plan |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Number of shares authorized (in shares) |  |  |  |  |  | 400,000 | 3,000,000
Number of shares available for grant (in shares) | 229,856 |  | 229,856 |  | 229,856 |  |
Share based compensation expense | $ 31,000 | 22,000 | $ 77,000 | 63,000 |  |  |
2012 Stock Plan | Maximum |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Shares approved for issuance |  |  |  |  |  | $ 300,000 |
2012 Stock Plan | Share-Based Payment Arrangement, Employee |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Share based compensation expense | 14,000 | 8,000 | 16,000 | 24,000 |  |  |
2012 Stock Plan | Share-Based Payment Arrangement, Nonemployee |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Share based compensation expense | 42,000 | 14,000 | 34,000 | 39,000 |  |  |
Salaries and benefits | $ 73,000 | $ 82,000 | $ 181,000 | $ 182,000 |  |  |
2012 Stock Plan | Restricted Stock | Share-Based Payment Arrangement, Tranche One |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Award vesting period |  |  | 3 years |  |  |  |
2012 Stock Plan | Restricted Stock | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Award vesting period |  |  | 4 years |  |  |  |
2012 Stock Plan | Restricted Stock | Share-Based Payment Arrangement, Tranche Three |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |
Award vesting period |  |  | 5 years |  |  |  |

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