Employee Benefit Plans and Non-Qualified Plans - Estimated Future Benefit Payments to Retirees (Detail) $ in Thousands	Dec. 31, 2017 USD ($)
Non-U.S. Qualified Defined Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2018	$ 86
2019	94
2020	92
2021	100
2022	107
2023 - 2027	709
Non Qualified Supplemental Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2018	1,572
2019	1,472
2020	1,368
2021	1,261
2022	1,154
2023 - 2027	$ 4,163

Defined Benefit Plan Expected Future Benefit Payments Years Six Through Ten

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- Definition

Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

+ References

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

+ References

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+ References

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