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Effects of Foreign Currency Options Designated as Cash Flow Hedges (Detail) (Cash Flow Hedging, Foreign Exchange Option, USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flow Hedging \| Foreign Exchange Option
Fair Value, Option, Quantitative Disclosures [Line Items]
Loss recognized in other comprehensive income (loss) - effective portion	$ (4,012)	$ (4,842)
Loss recognized in other income (expense) - ineffective portion	$ (298)	$ (269)

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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- Definition

The effective portion of losses on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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