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Cash Flow Hedge Related to Variable Debt Instrument and Outstanding Foreign Currency Derivatives to Hedge Foreign Currency Balances Measured at Fair Value on Recurring Basis, and Balances (Detail) (Fair Value, Measurements, Recurring, Cash Flow Hedging, Level 2, USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Fair Value, Measurements, Recurring | Cash Flow Hedging | Level 2
   
Liability:    
Interest rate derivative financial instruments $ 283 [1] $ 564 [1]
[1] Includes accrued interest expense