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Derivatives - Summary of Fair Values of Derivative Instruments Designated as Hedges (Detail) (Designated as Hedging Instrument [Member], USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Foreign Exchange Forward Contracts [Member] | Other Current Assets [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative asset fair value $ 2,806 $ 3,950
Interest Rate Swaps [Member] | Other Current Liabilities [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative liability fair value $ 20,493 $ 24,805