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Commitments and Contingencies (Details Textual)
6 Months Ended
Jun. 29, 2012
USD ($)
Mar. 31, 2010
USD ($)
Mar. 31, 2010
ILS
Guarantees (Textual) [Abstract]      
Non-cancelable purchase commitments $ 10,300,000    
Maximum amount of potential future payments under the company's financial guarantees 1,000,000    
Accrual for indemnification provisions 0    
Guarantees outstanding 0    
Amount of ex-parte judgment   $ 1,700,000 6,300,000
Action was dismissed by the Israeli Central District Court Jun. 26, 2012