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Derivative Instruments (Tables)
6 Months Ended
Jul. 03, 2011
Derivative Instruments [Abstract]  
Outstanding forward contracts
     
Currency   Amount
     
Japanese Yen/Euro
  200,000,000 Japanese Yen
U.S. Dollar/Euro
  14,310,000 U.S. Dollars
Information regarding the fair value of the forward contracts outstanding
                                         
    Asset Derivatives   Liability Derivatives
        Fair Value       Fair Value
    Balance                   Balance        
    Sheet   July 3,   December 31,   Sheet   July 3,   December 31,
    Location   2011   2010   Location   2011   2010
         
Currency
forward
contracts
 
Prepaid
expenses
and other
current
assets
    $ 209       $ 83    
Accrued
expenses
    $ 13       $ 125  
Information regarding the effect of the forward contracts, net of the underlying exposure, on the Consolidated Statements of Operations
                                         
    Location of   Amount of Gain (Loss)   Location of   Amount of Gain (Loss)
    Gain (Loss)   Recognized in Income on   Gain (Loss)   Recognized in Income on
    Recognized   Derivatives   Recognized   Derivatives
    in Income   Three-months ended   in Income   Six-months ended
    on   July 3,   July 4,   on   July 3,   July 4,
    Derivatives   2011   2010   Derivatives   2011   2010
Currency
forward contracts
 
Foreign
currency
gain (loss)
     $ 126       $ (206 )  
Foreign
currency
gain (loss)
     $ 128        $ (274 )