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Pension and Severance Plans (Korean Severance Plan) (Details) - Korean Severance Plan - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Deferred Compensation Liability, Current and Noncurrent [Roll Forward] |  |
Balance at beginning of the year | $ 56,289 | $ 73,345
Provision of severance benefits | 1,653 | 2,119
Severance payments | (8,770) | (15,295)
Foreign currency (gain) loss | (1,266) | (3,880)
Balance at the end of year | 47,906 | 56,289
Payments remaining with the National Pension Fund | (119) | (124)
Total accrued severance plan obligations at December 31 | 47,787 | 56,165
Less current portion of accrued severance plan obligations (Note 10) | 7,906 | 7,422
Non-current portion of accrued severance plan obligations | $ 39,881 | $ 48,743

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- Definition Lump-sum payments related to termination of employment (employees and directors), based on length of service, seniority and average monthly wages at the time of termination, which is not related to restructurings, pension plans or other post retirement benefit plans. Severance benefits are estimated assuming all eligible employees were to terminate their employment at the balance sheet date. + References No definition available. + Details
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- Definition Provision related to lump-sum payment upon termination of employment (employees and directors), based on length of service, seniority and average monthly wages at the time of termination, which is not related to restructurings, pension plans or other post retirement benefit plans. Severance benefits are estimated assuming all eligible employees were to terminate their employment at the balance sheet date. + References No definition available. + Details
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