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Restructuring (Tables)
3 Months Ended
Jun. 30, 2012
Restructuring [Abstract]  
Schedule Of Restructuring Charges And Cash Payments
    Severance pay     Facility        
    and benefits     exit costs     Total   
Accrued restructuring balance at April 1, 2012 $ 680   $ 294   $ 974  
Charges to operations   167     (39 )   128  
Cash payments   (269 )   (255 )   (524 )
Accrued restructuring balance at June 30, 2012 $ 578   $ -   $ 578