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Net Income Per Share
 12 Months Ended
Jul. 31, 2012
Earnings Per Share [Abstract]  
Net Income Per Share
(13)
   Net Income Per Share
 
The table below reconciles weighted average shares outstanding to weighted average shares and dilutive potential share outstanding (in thousands):

 
     Years Ended July 31,   
     2012   2011   2010
Weighted average common shares outstanding
                 128,120             151,298             168,330   
Effect of dilutive securities-stock options
                 3,308             2,054             1,724   
Diluted weighted average common shares outstanding
                 131,428             153,352             170,054   
 
There were no adjustments to net income required in calculating diluted net income per share. Excluded from the dilutive earnings per share calculation were 2,208,047, 5,107,978 and 11,785,282 options to purchase the Company’s common stock that were outstanding at July 31, 2012, 2011 and 2010, respectively, because their effect would have been anti-dilutive.