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Derivative Financial Instruments - Fair Values of Derivative Instruments (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Fair Value $ (555) $ (318)
Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Fair Value (555) (318)
Commodity Contracts [Member] | Accrued Expenses and Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Fair Value (553) (303)
Foreign Exchange Contract [Member] | Accrued Expenses and Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Liabilities, Fair Value $ (2) $ (15)