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Comprehensive Income (Tables)
6 Months Ended
Sep. 30, 2011
Comprehensive Income [Abstract] 
Schedule Of Comprehensive Income
     Three Months Ended
September 30,
     Six Months Ended
September 30,
 
     2011     2010      2011     2010  

Net income

   $ 7,051      $ 8,248       $ 9,450      $ 15,393   

Unrealized gain (loss) on cash equivalents, marketable securities and restricted investment, net of tax

     48        301         137        771   

Unrealized gain (loss) on hedge contracts, net of tax

     (330     372         (325     187   
  

 

 

   

 

 

    

 

 

   

 

 

 

Comprehensive income

   $ 6,769      $ 8,921       $ 9,262      $ 16,351