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Stock-Based Compensation Plans - Additional Information (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) $ / shares shares | Jan. 20, 2021 | Aug. 31, 2018 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of stock options granted | 13,454 | 130,588 |  |
Weighted Average Exercise Price, Granted | $ / shares | $ 13.09 | $ 7.77 |  |
Common stock exchange ratio |  |  | 0.90686 |
Stock-based compensation expense | $ | $ 410,000 | $ 298,000 |  |
Unrecognized compensation cost related to equity award grants | $ | $ 1,200,000 |  |  |
Unrecognized compensation cost expected remaining vesting period | 3 years |  |  |
Restricted Stock |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of restricted stock grants |  | 64,666 |  |
2018 Equity Incentive Plan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of stock options granted | 13,454 |  |  |
Weighted Average Exercise Price, Granted | $ / shares | $ 13.09 |  |  |
Number of restricted stock grants | 0 |  |  |
2018 Equity Incentive Plan | Restricted Stock | Common Stock |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of shares approved under the plan |  |  |  | 133,987
2018 Equity Incentive Plan | Stock Options | Common Stock |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of shares approved under the plan |  |  |  | 334,970

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