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Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 957,310
Ending balance	1,039,019
Foreign currency translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(47,204)	$ (23,623)
Current period other comprehensive income (loss)	6,964	(18,853)
Ending balance	(40,240)	(42,476)
Cash flow hedging instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	600	168
Current period other comprehensive income (loss)	(890)	1,398
Less reclassification adjustment	295	(837)
Ending balance	5	729
Available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(300)	(292)
Current period other comprehensive income (loss)	3	6
Ending balance	(297)	(286)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Ending balance	$ (40,532)	$ (42,033)

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581

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Amount after tax of reclassification adjustments of other comprehensive income (loss) attributable to parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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