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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands |  | 9 Months Ended
--- | --- | ---
Apr. 28, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total share based compensation cost |  | $ 2,135 |
Compensation expense recognized for restricted shares |  | 672 | $ 482
Unrecognized compensation costs |  | $ 855 | $ 864
2010 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares not issued (in shares) | 215,513 |  |
2010 Plan | Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grants during the period (in shares) |  | 184,487 |
2020 Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares of common stock reserved for issuance (in shares) |  | 400,000 |
2020 Plan | Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Grants during the period (in shares) |  | 40,189 |

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