Retirement Plans - Additional Information (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) Participant	Dec. 31, 2017 USD ($)	Dec. 31, 2016 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	145,700
Transfer out of level 3	$ 2,700
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Discount rate utilized to determine future pension obligations	4.00%	3.40%	3.90%
Fair value of pension plans assets totaled
Contribution to defined benefit pension plans	889	$ 557
Accumulated other comprehensive income (loss), prior service cost expected to be recognized in 2018	$ (200)
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	4.15%	3.40%
Fair value of pension plans assets totaled	$ 144,300
Contribution to defined benefit pension plans	2,600	$ 1,900
U.S. Supplemental Executive Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans	800	2,600
Contribution to defined benefit pension plans in 2018	2,700
Non-United States Subsidiaries
Defined Benefit Plan Disclosure
Contribution to defined benefit pension plans	900	900
Contribution to defined benefit pension plans in 2018	900
Taiwan Defined Benefit Pension Plan
Defined Benefit Plan Disclosure
Fair value of pension plans assets totaled	1,400
UNITED STATES
Defined Benefit Plan Disclosure
Accumulated benefit obligation for defined benefit pension plans	$ 172,800	$ 354,300
Percentage of expected return on plan assets assumption	4.30%	4.00%	4.80%
Discount rate utilized to determine future pension obligations	4.10%	3.40%
Fair value of pension plans assets totaled	$ 144,301	$ 324,506	$ 307,304
Contribution to defined benefit pension plans	2,587	4,462
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Accumulated benefit obligation for defined benefit pension plans	$ 35,600	$ 34,700
Percentage of expected return on plan assets assumption	1.50%	2.00%	2.00%
Discount rate utilized to determine future pension obligations	1.80%	1.80%
Fair value of pension plans assets totaled	$ 1,400	$ 1,307	$ 27,571
Contribution to defined benefit pension plans	$ 822	$ 883

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 included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

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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 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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