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Stockholders' Equity and Stock Plans - Narrative (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2017 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total compensation cost for share-based payment arrangements | $ 622,000 | $ 522,000 | $ 962,000 |  |
Share-based compensation income tax benefit recognized | 206,000 | 146,000 | 257,000 |  |
Unrecognized compensation expense | $ 800,000 |  |  |  |
Period for recognizing unrecognized compensation expense | 2 years 2 months 12 days |  |  |  |
Excess tax benefits recorded as a reduction to income tax expense | $ 0 | 2,000 | 3,000 |  |
Stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total grant-date fair value of option shares vested | $ 100,000 | 255,000 | 356,000 |  |
Stock options | Officers and Employees |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period | 3 years |  |  |  |
Expiration period of grants | 10 years |  |  |  |
Stock options | Officers and Employees | Share-Based Payment Arrangement, Tranche One |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage | 33.33% |  |  |  |
Stock options | Officers and Employees | Share-Based Payment Arrangement, Tranche Two |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage | 33.33% |  |  |  |
Stock options | Officers and Employees | Share-Based Payment Arrangement, Tranche Three |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage | 33.33% |  |  |  |
Stock options | Non-Employee Directors |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Expiration period of grants | 10 years |  |  |  |
Performance shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period | 3 years |  |  |  |
Restricted stock award |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total grant-date fair value of option shares vested | $ 355,000 | $ 428,000 | $ 431,000 |  |
Minimum | Performance shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage | 0.00% |  |  |  |
Maximum | Performance shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting percentage | 200.00% |  |  |  |
The Plan, 2020 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares approved to be issued in common stock (in shares) |  |  |  |  | 250,000
Number of shares available for future grants under plan (in shares) | 182,355 |  |  |  |
Employee Stock Purchase Plan, 2017 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares available for future grants under plan (in shares) | 370,739 |  |  |  |
Discount from closing market price at end of each quarter |  |  |  | 5.00% |
Employee Stock Purchase Plan, 2017 | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Approved payroll deduction to purchase shares, percentage |  |  |  | 1.00% |
Employee Stock Purchase Plan, 2017 | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Approved payroll deduction to purchase shares, percentage |  |  |  | 15.00% |
The 2017 Equity Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares available for future grants under plan (in shares) | 742,785 |  |  |  |
Common Stock | The Plan, 2020 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares awarded in period from plan (in shares) | 27,287 | 18,362 | 10,145 |  |

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