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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Taxes |  |  |
Net change in valuation allowance | $ (2,609) | $ (1,055) | $ (17,970)
Net operating loss carryforwards for U.S. federal income tax purposes | 7,699 |  |
Research and experimentation credit carryforwards | 2,997 |  |
Unrecognized tax benefits that would impact effective tax rate | 930 | 813 |
Unrecognized tax benefits that reduce deferred tax assets | $ 516 | $ 454 |
Minimum |  |  |
Income Taxes |  |  |
Foreign statutory tax rate, foreign operations | 24.00% |  |
Maximum |  |  |
Income Taxes |  |  |
Foreign statutory tax rate, foreign operations | 30.00% |  |

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