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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Taxes [Line Items] |  |  |
Income tax expense (benefit) | $ 4,389 | $ 9,284 | $ (8,213)
Income tax expense (benefit) at effective income tax rate | 13.40% | 13.80% | 32.80%
Foreign Tax Credit - Brazil | $ 3,900 | $ 7,000 | $ 4,800
Less: Valuation allowance | 13,807 | 12,652 |
Deferred Tax Assets, State Taxes | 2,800 | 2,500 | 4,900
Deferred Tax Assets, in Process Research and Development | 4,800 |  |
State And Foreign Net Operating Loss Carryforwards |  |  |
Income Taxes [Line Items] |  |  |
Operating Loss Carryforwards | 24,900 | 33,900 |
Less: Valuation allowance | 10,300 | 9,400 | 5,500
Excess Capital Losses From Investments And Other Related Items |  |  |
Income Taxes [Line Items] |  |  |
Less: Valuation allowance | $ 700 | $ 700 | $ 7,100
Terphane Ltda [Member] |  |  |
Income Taxes [Line Items] |  |  |
Income tax rate | 6.25% |  |
Current effective tax rate | 15.25% |  |
Percentage of social contribution on income included in current effective tax rate | 9.00% |  |
Brazilian |  |  |
Income Taxes [Line Items] |  |  |
Federal statutory income tax rate | 34.00% |  |
Income tax rate | 25.00% |  |
Percentage of social contribution on income included in federal statutory income tax rate | 9.00% |  |
Maximum |  |  |
Income Taxes [Line Items] |  |  |
Net Operating Loss Carrforward Expiration Period | 20 years |  |

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