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Stock-Based Compensation (Shares Outstanding) (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Time-Vested Stock Options [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Outstanding (shares) | 1,320,381 | 888,814 | 733,967
Vested or expected to vest (shares) | 1,320,381 |  |
Exercisable (shares) | 448,880 | 227,056 |
Weighted-Average Remaining Contractual Term, Options Outstanding (in years) | 8 years |  |
Weighted-Average Remaining Contractual Term, Vested or expected to vest (in years) | 8 years |  |
Weighted-Average Remaining Contractual Term, Options exercisable (in years) | 6 years 9 months 18 days |  |
Weighted Average Exercise Price, Options outstanding (per share) | $ 4.33 | $ 5.12 | $ 5.66
Weighted Average Exercise Price, Vested or expected to vest (per share) | 4.33 |  |
Weighted-Average Exercise Price, Options exercisable (per share) | 5.88 | $ 8.39 |
Agrregate IntrinsicValue Options outstanding | $ 4 |  |
Aggregate Intrinsic Value, Vested or expected to vest | $ 0 |  |
Aggregate Intrinsic Value, Vested or expected to vest, Options exercisable | $ 4 |  |
Stock Appreciation Rights (SARs) [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Outstanding (shares) | 2,068,705 |  |
Vested or expected to vest (shares) | 2,068,705 |  |
Exercisable (shares) | 1,564,300 | 909,313 |
Weighted-Average Remaining Contractual Term, Options Outstanding (in years) | 6 years 9 months 18 days |  |
Weighted-Average Remaining Contractual Term, Vested or expected to vest (in years) | 6 years 9 months 18 days |  |
Weighted-Average Remaining Contractual Term, Options exercisable (in years) | 6 years 8 months 12 days |  |
Weighted Average Exercise Price, Options outstanding (per share) | $ 2.2 |  |
Weighted Average Exercise Price, Vested or expected to vest (per share) | 2.2 |  |
Weighted-Average Exercise Price, Options exercisable (per share) | 2.15 |  |
Agrregate IntrinsicValue Options outstanding | $ 1,028,545 |  |
Aggregate Intrinsic Value, Vested or expected to vest | $ 1,028,545 |  |
Aggregate Intrinsic Value, Vested or expected to vest, Options exercisable | $ 867,136 |  |

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