Date qualified defined benefit pension plan will be frozen.

No definition available.

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- Definition

Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]

+ References

No definition available.

+ Details

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- Definition

Amount of (increase) decrease in accumulated benefit obligation of defined benefit plan from effects of settlement and curtailment.

+ 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 (r)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

+ Details

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- Definition

Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)(7)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)(7)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e2709-114920

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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- Details

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Pension and Other Postretirement Benefits - Additional Information (Detail) - Defined Benefit Pension Plan [Member] - U.S. [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Effective date qualified defined benefit pension plan will be frozen			Jun. 01, 2018
Employer contributions to defined contribution plan equaling non-elective contribution, percentage of employee compensation			3.00%
Reduction in pension liability due to plan freeze			$ 1,726
Curtailment loss	$ 21	$ 0	$ 21	$ 0
Maximum [Member]
Defined Benefit Plans And Other Postretirement Benefit Plans [Line Items]
Defined benefit pension contribution plan, matching contribution rate			4.00%