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Net Income Per Common Share
6 Months Ended
Jun. 30, 2011
Net Income Per Common Share [Abstract]  
Net Income Per Common Share
Note 7 — Net Income Per Common Share
Basic net income per common share is computed by dividing net income by the basic weighted average number of common shares outstanding during the period. Diluted net income per common share is computed by dividing net income by the diluted weighted average number of common shares and common equivalent shares outstanding during the period. The weighted average number of common equivalent shares outstanding has been determined in accordance with the treasury-stock method. Common equivalent shares consist of common stock issuable on the exercise of outstanding options and vesting of restricted stock units when dilutive.
Basic and diluted weighted average common shares are as follows (in thousands):
                                 
    Three Months Ended     Six Months Ended  
    June 30,     June 30,  
    2011     2010     2011     2010  
Basic weighted average common shares outstanding
    22,684       22,517       22,698       22,453  
Weighted average common equivalent shares
    519       618       529       553  
 
                       
Diluted weighted average common shares outstanding
    23,203       23,135       23,227       23,006  
 
                       
 
                               
Options excluded from diluted weighted average share calculation as effect would have been anti-dilutive
    121       352       89       563