Employee Benefit Plans - Summary of Changes in Projected Benefit Obligations and Plan Assets, and Ending Balances of Defined Benefit Plans (Detail) - Newport [Member] $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Change in projected benefit obligations:
Service cost	$ 479
Interest cost	377
Change in plan assets:
Net underfunded status	(15,778)
Change in Projected Benefit Obligation [Member]
Change in projected benefit obligations:
Projected benefit obligations, beginning of year	2,134
Liabilities assumed through acquisition	22,437
Service cost	479
Interest cost	377
Actuarial (gain) loss	1,085
Benefits paid	(897)
Currency translation adjustments	(2,165)
Projected benefit obligations, end of year	23,450
Change in plan assets:
Gain on plan assets	1,085
Benefits paid	(897)
Change in Plan Assets [Member]
Change in projected benefit obligations:
Actuarial (gain) loss	66
Benefits paid	(437)
Change in plan assets:
Fair value of plan assets, beginning of year	301
Assets acquired through acquisition	7,896
Company contributions	741
Gain on plan assets	66
Benefits paid	(437)
Currency translation adjustments	(895)
Fair value of plan assets, end of year	$ 7,672

Defined Benefit Plan Pension Plan Change In Benefit Obligation [Abstract]

No definition available.

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- Definition

Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Gain or Loss
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-Publisher FASB
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-SubTopic 20
-Section 50
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No definition available.

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

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- Definition

The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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- Definition

The amount of increase in the benefit obligation attributed to business combinations.

+ References

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The amount of increase in the plan assets attributed to a business combination.

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- Definition

Amount of contributions made by the employer to defined benefit plans.

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Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

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- Definition

Amount of gain (loss) from foreign currency exchange rate changes for benefit obligation for plans of a foreign operation whose functional currency is not the reporting currency.

+ References

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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- Definition

The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

+ References

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