Quarterly report pursuant to Section 13 or 15(d)

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

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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 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Cash Flow Hedging | Foreign Exchange Option
       
Derivative Instruments, Gain (Loss) [Line Items]        
Gain (loss) recognized in other comprehensive loss - effective portion $ 1,179 $ (2,813) $ (3,174) $ (19,848)
Gain (loss) recognized in other income (expense) - ineffective portion 13 (134) (307) (484)
Amount reclassified from accumulated comprehensive income (loss) into depreciation and amortization expense $ 177   $ 294