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Equity Compensation Plans (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
May 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | May 31, 2019
Summary Of Stock Option Activity [Abstract] |  |  |  |  |
Cash received from options exercised |  |  |  | $ 32 |
Total compensation cost |  | $ 1,400 | $ 2,100 | 2,500 |
Vesting Percentage , Fully Vest , Performance measure |  | 50.00% |  |  |
Minimum |  |  |  |  |
Summary Of Stock Option Activity [Abstract] |  |  |  |  |
Vesting Percentage , Fully Vest , Performance measure |  | 50.00% |  |  |
Maximum |  |  |  |  |
Summary Of Stock Option Activity [Abstract] |  |  |  |  |
Vesting Percentage , Pro rata , Performance measure |  | 50.00% |  |  |
2019 Plan |  |  |  |  |
Summary Of Stock Option Activity [Abstract] |  |  |  |  |
Number of shares authorized | 1,800,000 |  |  |  | 600,000
Increase in number of shares authorized | 1,200,000 |  |  |  |
Number of shares available for issuance |  | 1,395,981 |  |  |
Employee and Nonemployee Stock Options [Member] |  |  |  |  |
Summary Of Stock Option Activity [Abstract] |  |  |  |  |
Intrinsic value of options exercised |  |  |  | 27 |
Cash received from options exercised |  |  |  | 32 |
Tax benefit realized from option exercises |  |  |  | $ 5 |
Restricted Stock and Restricted Stock Units [Member] |  |  |  |  |
Summary Of Stock Option Activity [Abstract] |  |  |  |  |
Vesting period |  | 3 years |  |  |

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