Quarterly report pursuant to Section 13 or 15(d)

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

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Effects of Foreign Currency Collar Designated as Cash Flow Hedges (Detail) (Cash Flow Hedging, Foreign Currency Collar, USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Cash Flow Hedging | Foreign Currency Collar
   
Derivative Instruments, Gain (Loss) [Line Items]    
Loss recognized in other comprehensive income - effective portion $ (1,588) $ (3,722)
Amount reclassified from accumulated other comprehensive income (loss) into depreciation and amortization expense $ (60)