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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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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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