Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Common Share

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Net Income Per Common Share
 3 Months Ended
Apr. 30, 2011
Net income per common share [Abstract]  
Net income per common share
6. Net income per common share
The following is a reconciliation of net income and the number of shares of common stock used in the computation of net income per basic and diluted share:
                 
    Three months ended
    April 30,   May 1,
    2011   2010
     
 
               
Net income
  $ 23,296     $ 13,661  
 
               
Denominator for basic net income per share — weighted-average common shares
    60,554       58,306  
Dilutive effect of stock options and non-vested stock
    2,204       1,970  
     
Denominator for diluted net income per share
    62,758       60,276  
 
               
Net income per common share:
               
Basic
  $ 0.38     $ 0.23  
Diluted
  $ 0.37     $ 0.23  
The denominators for diluted net income per common share for the three months ended April 30, 2011 and May 1, 2010 exclude 189 and 803 employee stock options, respectively, due to their anti-dilutive effects.