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Computation Of Net (Loss) Income Per Common Share (Tables)
3 Months Ended
Jun. 30, 2011
Computation Of Net (Loss) Income Per Common Share  
Schedule Of Earnings Per Share Calculation
         
    Three months ended June 30,
    2011   2010
         
Numerator:      
         
  Net (loss) income  $         (37,679)    $              9,170
         
Denominator:      
  Weighted-average shares of common stock outstanding               51,172                  45,454
  Weighted-average shares subject to repurchase                  (463)                     (212)
         
Shares used in per-share calculation  basic               50,709                  45,242
         
  Dilutive effect of employee equity incentive plans                       -                         741
         
Shares used in per-share calculation diluted               50,709                  45,983
         
Net (loss) income per share basic  $             (0.74)    $                0.20
         
Net (loss) income per share diluted  $             (0.74)    $                0.20