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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating Loss Carryforwards [Line Items] |  |  |  |
Income tax expense (benefit) on operations | $ 9,030 | $ (2,774) | $ 8,102 |
Unremitted earnings of foreign subsidiaries | 43,530 |  |  |
Total operating income (loss) | 15,411 | (7,664) | 71,281 |
General business tax credit carry forwards, expiration date |  |  |  | Dec. 31, 2025
Liability for uncertain tax positions reduction to noncurrent asset | 2,891 |  |  |
Unrecognized tax benefits that would impact effective tax rate | 2,891 | 3,449 |  |
Amount affecting the Company's tax rate | 2,612 | (2,252) | 14,363 |
Gross interest and penalties expense (benefit) | 0 | 0 | (5) |
Impairment of Goodwill | 0 | $ 0 | $ 0 |
State and Local Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carry forwards | 76,986 |  |  |
General business and foreign tax credit carry forwards | 963 |  |  |
Foreign Tax Authority [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Net operating loss carry forwards | 53,761 |  |  |
General business and foreign tax credit carry forwards | 1,122 |  |  |
U.S. Federal [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
General business and foreign tax credit carry forwards | $ 22,087 |  |  |
Maximum [Member] | State and Local Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carry forwards, expiration dates | Dec. 31, 2041 |  |  |
Maximum [Member] | Foreign Tax Authority [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carry forwards, expiration dates | Dec. 31, 2026 |  |  |
Minimum [Member] | State and Local Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carry forwards, expiration dates | Dec. 31, 2029 |  |  |
Minimum [Member] | Foreign Tax Authority [Member] |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |
Operating loss carry forwards, expiration dates | Dec. 31, 2021 |  |  |

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