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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 21, 2024 | Jun. 13, 2023 | Jun. 30, 2023 | Jan. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Oct. 31, 2020
Stock-based compensation |  |  |  |  |  |  |  |
Stock awards vesting period |  |  |  | 3 years |  |  |  |
Remaining unrecognized compensation cost of non-vested stock options |  |  |  |  | $ 0.1 |  |  |
Weighted-average remaining requisite service period of recognition of unrecognized compensation cost |  |  |  |  | 1 year 3 months 18 days |  |  |
Minimum |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Stock awards vesting period |  |  |  |  | 3 years |  |  |
Maximum |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Stock awards vesting period |  |  |  |  | 4 years |  |  |
Stock options |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Stock awards vesting period |  |  |  |  | 6 months |  |  |
Options granted (in shares) |  |  |  |  | 12,500 | 43,342 |  |
Options granted, grant date fair value per share |  |  |  |  | $ 1.77 |  |  |
Options forfeited during the year |  |  |  |  | 8,600 |  |  |
Options exercised (in shares) |  |  |  |  | 0 | 0 |  |
Stock options | Minimum |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Options granted, grant date fair value per share |  |  |  |  |  | $ 6.32 |  |
Stock options | Maximum |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Options granted, grant date fair value per share |  |  |  |  |  | $ 10.98 |  |
Stock options | Options Vesting On Third Anniversary Of Grant |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Options granted (in shares) |  |  |  |  |  | 17,033 |  |
Vesting period |  |  |  |  |  | 3 years |  |
Restricted Stock Units |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Vesting period |  |  |  |  | 6 months |  |  |
Restricted Stock Units, Granted |  |  | 8,488 | 17,133 | 12,500 | 25,621 |  |
Restricted stock units, grant date fair value per share non-vested |  |  |  | $ 13.50 | $ 12.01 | $ 16.26 | $ 28.20 |
Restricted stock units, grant date fair value per share vested |  |  | $ 8.84 |  | $ 2.28 | $ 11.96 |  |
Shares forfeited |  |  |  |  | 7,584 | 300 |  |
Additional shares forfeited |  |  |  |  | 7,584 |  |  |
2018 Plan |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Number of additional shares authorized | 160,000 | 60,000 |  |  |  |  |  |
Number of shares reserved for issuance |  |  |  |  | 196,000 |  |  |
Life of stock option awards granted |  |  |  |  | 10 years |  |  |
2018 Plan | Minimum |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Stock awards vesting period |  |  |  |  | 1 year |  |  |
2018 Plan | Maximum |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Stock awards vesting period |  |  |  |  | 4 years |  |  |
Inducement Plan |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |  |
Number of shares reserved for issuance |  |  |  |  | 13,333 |  |  |
Number of authorized shares |  |  |  |  |  |  |  | 13,333

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