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Impact of Derivatives on Statement of Operations (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) $ (75) $ (472)
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (712) (721)
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) (1) (1)
Amount of Gain or (Loss) Recognized in Income on Derivative   (160)
Designated as Hedging | Cash Flow Hedging | Interest Rate Contracts
   
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in OCI on Derivative (Effective Portion) (75) (472)
Designated as Hedging | Cash Flow Hedging | Interest Rate Contracts | Interest Expense
   
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (712) (721)
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion) (1) (1)
Not Designated as Hedging Instrument | Foreign Exchange Contract | Other income/(expense)
   
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain or (Loss) Recognized in Income on Derivative   $ (160)