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Pension Plans - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Net pension charge	$ 0.0	$ 0.8	$ (0.1)	$ 2.5
German Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net pension charge	$ 0.1	$ 0.1	$ 0.5	$ 0.4

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 715



-SubTopic 20



-Section 50



-Paragraph 1



-Subparagraph (h)



-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 715



-SubTopic 20



-Section 50



-Paragraph 1



-Subparagraph (j)



-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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Period Type:	duration

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- Details

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Period Type: