Retirement Plans - Additional Information (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) Participant	Dec. 31, 2017 USD ($)
Defined Benefit Plan Disclosure
Number of retiree participants \| Participant		1,700
Defined Benefit Plan, decrease in benefit obligation		$ 151,300
Defined Benefit Plan, decrease in plan assets		(151,300)
Gain (Loss) Due to Settlement		(300)
Fair value of pension plans assets totaled	$ 168,500
Transfer out of level 3		$ 2,700
United States Plans
Defined Benefit Plan Disclosure
Percentage of expected return on plan assets assumption	4.25%
Discount rate utilized to determine future pension obligations	3.10%	4.15%
Fair value of pension plans assets totaled	$ 166,900
U.S. Supplemental Executive Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans	900	$ 2,600
Contribution to defined benefit pension plans in 2018	2,800
Non-United States Subsidiaries
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans		800
Contribution to defined benefit pension plans in 2018	1,000
Taiwan Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Fair value of pension plans assets totaled	1,600
UNITED STATES
Defined Benefit Plan Disclosure
Accumulated benefit obligation for defined benefit pension plans	$ 198,200	$ 172,800
Percentage of expected return on plan assets assumption	4.30%	4.30%	4.00%
Discount rate utilized to determine future pension obligations	3.00%	4.10%
Fair value of pension plans assets totaled	$ 166,932	$ 144,301	$ 324,506
Contribution to defined benefit pension plans	2,805	2,587
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Accumulated benefit obligation for defined benefit pension plans	$ 39,900	$ 35,600
Percentage of expected return on plan assets assumption	2.00%	1.50%	2.00%
Discount rate utilized to determine future pension obligations	1.10%	1.80%
Fair value of pension plans assets totaled	$ 1,586	$ 1,400	$ 1,307
Contribution to defined benefit pension plans	$ 923	$ 822

Defined Benefit Plan Number of Retiree Participants Who Had Deferred Vested Benefits Transferred to Insurance

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Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

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Amount of increase (decrease) in benefit obligation of defined benefit plan.

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Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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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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Amount of increase (decrease) in plan assets of defined benefit plan.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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Amount, measured using unobservable inputs, of increase (decrease) in plan assets of defined benefit plan, for assets transferred into (out of) Level 3 of fair value hierarchy. Includes, but is not limited to, transfer due to change in observability of significant inputs.

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