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Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 147,745 | $ 163,957
Debt: |  |
Total debt | 5,183 | 5,248
Less: current portion | (5,183) | (5,248)
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 147,745 | 163,957
Debt: |  |
Debt, maturity | June 2024 |
Outstanding credit lines interest rate | 2.85% |
Suzhou Short-Term Credit Line [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 3,155 | 3,149
Debt: |  |
Debt, maturity | May 2022 - October 2022 |
Maximum [Member] | Suzhou Short-Term Credit Line [Member] |  |
Debt: |  |
Short-term debt, weighted average interest rate | 4.30% |
Minimum [Member] | Revolving Credit Facility [Member] |  |
Debt: |  |
Long-term debt, weighted average interest rate | 2.85% |
Minimum [Member] | Suzhou Short-Term Credit Line [Member] |  |
Debt: |  |
Outstanding credit lines interest rate | 4.00% |
Sweden Short-Term Note [Member] |  |
Debt Instrument [Line Items] |  |
Revolving credit facility | $ 2,028 | $ 2,099
Debt: |  |
Debt, maturity | April 2022 |
Outstanding credit lines interest rate | 2.67% |

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