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 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Cash Flow Hedging | Foreign Exchange Option
       
Fair Value, Option, Quantitative Disclosures [Line Items]        
Loss recognized in other comprehensive loss - effective portion $ (341) $ (12,193) $ (4,353) $ (17,035)
Loss recognized in other income (expense) - ineffective portion (22) (81) (320) (350)
Amount reclassified from accumulated other comprehensive income (loss) into depreciation expense $ 117   $ 117