Other Comprehensive Loss - Changes in Accumulated OCI by Component (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (36,493)	$ (27,925)
Other comprehensive income (loss) before reclassifications	8,330	(9,040)
Amortization of interest contracts to interest expense	472	472
Reclassification adjustment of foreign currency translation	21,755
Reclassification adjustment for realized gains on available-for-sale securities	(1,416)	0	0
Net current-period other comprehensive income (loss)	29,141	(8,568)
Ending Balance	(7,352)	(36,493)	(27,925)
Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(7,912)	(22,247)
Other comprehensive income (loss) before reclassifications	(1,045)	13,863
Amortization of interest contracts to interest expense	472	472
Reclassification adjustment of foreign currency translation	0
Reclassification adjustment for realized gains on available-for-sale securities	0
Net current-period other comprehensive income (loss)	(573)	14,335
Ending Balance	(8,485)	(7,912)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(30,624)	(5,678)
Other comprehensive income (loss) before reclassifications	10,002	(24,946)
Amortization of interest contracts to interest expense	0	0
Reclassification adjustment of foreign currency translation	21,755
Reclassification adjustment for realized gains on available-for-sale securities	0
Net current-period other comprehensive income (loss)	31,757	(24,946)
Ending Balance	1,133	(30,624)
Net Unrealized Gains (Losses) on Marketable Securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	2,043	0
Other comprehensive income (loss) before reclassifications	(627)	2,043
Amortization of interest contracts to interest expense	0	0
Reclassification adjustment of foreign currency translation	0
Reclassification adjustment for realized gains on available-for-sale securities	(1,416)
Net current-period other comprehensive income (loss)	(2,043)	2,043
Ending Balance	$ 0	$ 2,043

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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 of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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

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