Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (35,066)	$ (50,058)
Other comprehensive income (loss) before reclassifications	3,056	5,094
Amounts reclassified from accumulated other comprehensive loss (income)	(485)	3
Net current-period other comprehensive income (loss)	2,571	5,097
Ending balance	(32,495)	(44,961)
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(35,551)	(57,326)
Other comprehensive income (loss) before reclassifications	3,056	6,619
Net current-period other comprehensive income (loss)	3,056	6,619
Ending balance	(32,495)	(50,707)
Derivative adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	485	6,587
Other comprehensive income (loss) before reclassifications		(1,801)
Amounts reclassified from accumulated other comprehensive loss (income)	(485)	3
Net current-period other comprehensive income (loss)	(485)	(1,798)
Ending balance		(4,789)
Unrealized gain on investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		681
Other comprehensive income (loss) before reclassifications		276
Net current-period other comprehensive income (loss)		276
Ending balance		$ 957

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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

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