XML 15 R48.htm IDEA: XBRL DOCUMENT v2.4.0.6
Derivative Instruments - Information Regarding the Fair Value of the Forward Contracts Outstanding (Detail) (Currency forward contracts [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Accrued expenses [Member]
   
Derivatives, Fair Value [Line Items]    
Liability Derivatives, Fair Value $ 83 $ 14
Prepaid expenses and other current assets [Member]
   
Derivatives, Fair Value [Line Items]    
Asset Derivatives, Fair Value $ 1 $ 44