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Pension and Severance Plans (Schedule of Accrued Severance Obligation) (Details) - Korean Severance Plan - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Deferred Compensation Liability, Current and Noncurrent [Roll Forward] |  |
Balance at beginning of the year | $ 47,906 | $ 56,289
Provision of severance benefits | 3,142 | 1,653
Severance payments | (1,416) | (8,770)
Foreign currency (gain) loss | (6,194) | (1,266)
Balance at the end of year | 43,438 | 47,906
Payments remaining with the National Pension Fund | (101) | (119)
Total accrued severance plan obligations at December 31 | 43,337 | 47,787
Less current portion of accrued severance plan obligations (Note 10) | 12,231 | 7,906
Non-current portion of accrued severance plan obligations | 31,106 | $ 39,881
Postemployment benefit liability, current, converted to defined contribution plan | $ 5,000 |

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