v2.4.0.8
Derivatives - Schedule of Estimated Fair Values of Derivatives Designated as Hedging Instruments (Detail) (Prepaid expenses [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Prepaid expenses [Member]
   
Derivative [Line Items]    
Derivatives designated as hedging instruments $ 3,609 $ 5,374