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Derivative Financial Instruments - Balance Sheet Location and Fair Value of Assets and Liabilities Associated with Derivative Financial Instruments (Detail) (Foreign exchange contract, USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Foreign exchange contract
   
Derivatives, Fair Value [Line Items]    
Foreign exchange contracts: Other current liabilities $ 1,656us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ForeignExchangeContractMember
$ 395us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue
/ us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis
= us-gaap_ForeignExchangeContractMember