Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013	$ (36,493)
Reclassification adjustment for realized gains on securities available-for-sale	(430)	0
Balance, March 31, 2014	(31,036)
Gains and Losses on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013	(7,912)
Other comprehensive (loss) income before reclassifications	(239)
Reclassification adjustment for realized gains on securities available-for-sale	0
Amounts reclassified from accumulated other comprehensive loss	118
Net current-period other comprehensive (loss) income	(121)
Balance, March 31, 2014	(8,033)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013	(30,624)
Other comprehensive (loss) income before reclassifications	6,269
Reclassification adjustment for realized gains on securities available-for-sale	0
Amounts reclassified from accumulated other comprehensive loss	0
Net current-period other comprehensive (loss) income	6,269
Balance, March 31, 2014	(24,355)
Net Unrealized Gains on Marketable Securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013	2,043
Other comprehensive (loss) income before reclassifications	(261)
Reclassification adjustment for realized gains on securities available-for-sale	(430)
Amounts reclassified from accumulated other comprehensive loss	0
Net current-period other comprehensive (loss) income	(691)
Balance, March 31, 2014	1,352
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Balance, December 31, 2013	(36,493)
Other comprehensive (loss) income before reclassifications	5,769
Reclassification adjustment for realized gains on securities available-for-sale	(430)
Amounts reclassified from accumulated other comprehensive loss	118
Net current-period other comprehensive (loss) income	5,457
Balance, March 31, 2014	$ (31,036)

- Definition

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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