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Pension and Severance Plans (Schedule of Allocation of Plan Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 125,282 | $ 129,196 | $ 127,338
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 74,465 | 84,219 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 50,817 | 44,977 |
Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 749 | 217 |
Cash and cash equivalents | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 749 | 217 |
Cash and cash equivalents | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14,276 | 13,680 |
Equity securities | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 14,276 | 13,680 |
Equity securities | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Government bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,712 | 3,674 |
Government bonds | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 3,712 | 3,674 |
Government bonds | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,259 | 1,130 |
Corporate bonds | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 1,259 | 1,130 |
Corporate bonds | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Treasury notes |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,881 | 11,993 |
Treasury notes | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,881 | 11,993 |
Treasury notes | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 19,220 | 36,823 |
Equity funds | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 11,950 | 29,016 |
Equity funds | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 7,270 | 7,807 |
Debt funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 30,726 | 25,194 |
Debt funds | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 18,210 | 12,031 |
Debt funds | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,516 | 13,163 |
Guaranteed investment contracts |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 30,365 | 23,189 |
Guaranteed investment contracts | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Guaranteed investment contracts | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 30,365 | 23,189 |
Taiwan retirement fund |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,428 | 12,478 |
Taiwan retirement fund | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 12,428 | 12,478 |
Taiwan retirement fund | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Other, net |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 666 | 818 |
Other, net | Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Other, net | Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 666 | $ 818 |
Japan | Debt securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 64.00% |  |
Japan | Other, net |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 2.00% |  |
Japan | Equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 34.00% |  |
Korea | Debt securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 30.00% |  |
Korea | Other, net |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 50.00% |  |
Korea | Equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 20.00% |  |
Philippines | Debt securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 50.00% |  |
Philippines | Other, net |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 5.00% |  |
Philippines | Equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets, target allocation (as a percent) | 45.00% |  |

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