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Segment Information - Geographic Information on Sales to External Customers (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales to external customers	$ 296,031	$ 278,233	$ 295,998	$ 279,268	$ 313,318	$ 273,746	$ 287,011	$ 256,708	$ 1,149,530	$ 1,130,783	$ 1,133,885
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales to external customers									580,724	593,539	530,845
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Sales to external customers									$ 568,806	$ 537,244	$ 603,040

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

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+ References

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