Derivatives and Hedge Accounting - Summary of Fair Value of Foreign Currency Exchange Contracts (Detail) (Foreign Currency Exchange Contracts [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Derivatives Designated as Hedging Instruments [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, Asset	$ 1,364	$ 437
Derivatives Designated as Hedging Instruments [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, Asset	2,270	423
Derivatives Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, Liability	2,858	7,689
Derivatives Designated as Hedging Instruments [Member] | Other Non-Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, Liability	1,384	5,606
Derivatives not Designated as Hedging Instruments [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, Asset		97
Derivatives not Designated as Hedging Instruments [Member] | Accrued Expenses and Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Foreign currency exchange contracts, Liability	$ 85