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Stock Based Compensation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2017
Stock-based compensation | $ 1,200 | $ 800 | $ 3,202 | $ 1,999 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award expiration Period |  |  | 10 years |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 3 years |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 32,564 |  | 32,564 |  | 38,013 |
Restricted Stock [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) |  |  | 45,027 |  |  |
Unrecognized compensation cost related to nonvested shares | $ 1,400 |  | $ 1,400 |  |  |
Weighted average period related to compensation cost |  |  | 1 year 2 months 12 days |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number | 136,948 |  | 136,948 |  | 169,313 |
Performance unit shares to satisfy tax obligation created from vesting, net |  |  | 34,458 |  |  |
Performance Shares [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) |  |  | 14,710 |  |  |
Unrecognized compensation cost related to nonvested shares | $ 1,400 |  | $ 1,400 |  |  |
Weighted average period related to compensation cost |  |  | 1 year 7 months 6 days |  |  |
Performance unit shares to satisfy tax obligation created from vesting, net |  |  | 14,711 |  |  |
Non-vested restricted stock units [Member] |  |  |  |  |  |
Unrecognized compensation cost related to nonvested shares | $ 1,400 |  | $ 1,400 |  |  |
Weighted average period related to compensation cost |  |  | 1 year 3 months 18 days |  |  |
2017 Equity Compensation Plan [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares) |  |  |  |  |  | 750,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) |  |  | 329,175 |  |  |

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