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Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Tax benefit at statutory rate | $ (4,533) | $ (3,147) | $ (3,114)
Increase (reduction) in income taxes resulting from: |  |  |
Valuation allowance change | 9,964 | 4,779 | 1,566
Foreign income taxes | 2,969 | 415 | 1,138
Nondeductible executive compensation | 989 | 878 | 1,075
Equity compensation | 872 | 472 | (477)
Net change in uncertain tax positions | 652 | 527 | 762
State income taxes, net of federal benefit | 281 | 484 | 73
Nondeductible entertainment expenses | 262 | 117 | 65
Foreign interest disallowance | 0 | 151 | 307
Foreign deferred items | 0 | (112) | 53
Foreign derived intangible income deduction | (501) | (133) | (144)
Research and development credit | (800) | (961) | (959)
Provision to return adjustments | (937) | 336 | 63
Other | (114) | 402 | (401)
Income tax expense | $ 9,104 | $ 4,208 | $ 7

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