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Commitments and Contingencies (Details Textual)
Mar. 30, 2012
USD ($)
Mar. 31, 2010
USD ($)
Mar. 31, 2010
ILS
Additional Guarantees (Textual) [Abstract]      
Guarantees outstanding $ 0    
Guarantees (Textual) [Abstract]      
Accrual for indemnification provisions 0    
Non-cancelable purchase commitments 24,000,000    
Maximum amount of potential future payments under the company's financial guarantees 1,100,000    
Amount of ex-parte judgment   $ 1,700,000 6,300,000