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Stock-Based Compensation (Narrative) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 USD ($) shares | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) ShareBasedCompensationPlan shares | Sep. 30, 2020 USD ($) shares | May 29, 2019 shares | Mar. 19, 2019 shares | May 16, 2013 shares | May 21, 2009 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of stock-based compensation plans | ShareBasedCompensationPlan |  |  | 2 |  |  |  |  |
Compensation cost | $ | $ 171 | $ 240 | $ 527 | $ 590 |  |  |  |
Total income tax (expense) benefit | $ | $ 36 | 50 | $ 111 | $ 124 |  |  |  |
Shares available to be issued |  |  |  |  |  |  | 272,727 |
2009 Equity Compensation Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares remaining available |  |  |  |  |  | 0 |  |
2019 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized |  |  |  |  | 300,000 |  |  |
Shares remaining available | 184,855 |  | 184,855 |  |  |  |  |
Stock Options [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expiration period |  |  | 10 years |  |  |  |  |
Shares cancelled, forfeited or expired |  |  | 1,454 | 14 |  |  |  |
Options exercised |  |  | 14,544 | 4,545 |  |  |  |
Shares granted |  |  | 0 | 0 |  |  |  |
Stock Options [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting periods |  |  | 1 year |  |  |  |  |
Stock Options [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting periods |  |  | 3 years |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares vested |  |  | 11,955 | 27,697 |  |  |  |
Shares granted |  |  | 69,960 |  |  |  |  |
Unrecognized compensation cost | $ | $ 1,233 | $ 762 | $ 1,233 | $ 762 |  |  |  |
Shares, Forfeited |  |  | 7,912 | 5,234 |  |  |  |
Restricted Stock [Member] | 2009 Equity Compensation Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized |  |  |  |  |  |  |  | 36,363
Restricted Stock [Member] | 2019 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Shares granted |  |  |  | 19,660 |  |  |  |
Restricted Stock [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting periods |  |  | 1 year |  |  |  |  |
Restricted Stock [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Vesting periods |  |  | 3 years |  |  |  |  |

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