Quarterly report pursuant to Section 13 or 15(d)

Effects of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail)

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Effects of Foreign Currency Forward Contracts Designated as Cash Flow Hedges (Detail) (Cash Flow Hedging, Foreign Exchange Forward, USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Cash Flow Hedging | Foreign Exchange Forward
 
Fair Value, Option, Quantitative Disclosures [Line Items]  
Loss recognized in other comprehensive income (loss) - effective portion $ (16,633)
Gain recognized in other income (expense) - ineffective portion $ 68