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Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 157,820 | $ 163,957
Debt: |  |
Total debt | 4,178 | 5,248
Less: current portion | (4,178) | (5,248)
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 157,820 | 163,957
Debt: |  |
Debt, maturity | June 2024 |
Outstanding credit lines interest rate | 3.59% |
Suzhou Short-Term Credit Line [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 2,986 | 3,149
Debt: |  |
Debt, maturity | October 2022 - June 2023 |
Maximum [Member] | Suzhou Short-Term Credit Line [Member] |  |
Debt: |  |
Short-term debt, weighted average interest rate | 4.00% |
Minimum [Member] | Revolving Credit Facility [Member] |  |
Debt: |  |
Long-term debt, weighted average interest rate | 3.59% |
Minimum [Member] | Suzhou Short-Term Credit Line [Member] |  |
Debt: |  |
Outstanding credit lines interest rate | 3.70% |
Sweden Short-Term Note [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 1,192 | $ 2,099
Debt: |  |
Debt, maturity | July 2022 |
Outstanding credit lines interest rate | 3.25% |

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