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Note 3 - Net Income Per Common Share
12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Earnings Per Share [Text Block]
Note
3
– Net Income Per Common Share
 
Basic net income per share is computed based on the weighted average number of common shares outstanding. Diluted net income per share is computed based on the weighted average number of common shares outstanding, increased by the number of additional shares that would have been outstanding had the potentially dilutive common shares been issued and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially dilutive shares. Potentially dilutive shares of common stock include stock options and other stock-based awards granted under stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan.
 
 
The following table presents the calculation of net income per basic and diluted share attributable to common shareholders:
 
       
   
Year Ended December 31,
 
(in thousands, except share and per share amounts)
 
2017
   
2016
   
2015
 
                         
Net Income
  $
51,778
    $
42,707
    $
46,514
 
                         
Basic - weighted-average shares outstanding:
   
26,647,610
     
26,365,173
     
26,005,858
 
Effect of dilutive securities:
                       
Employee stock options, restricted stock and other
   
197,461
     
199,466
     
314,426
 
Diluted - weighted-average shares outstanding:
   
26,845,071
     
26,564,639
     
26,320,284
 
Net income per share attributable to common shareholders:
                       
Basic
  $
1.94
    $
1.62
    $
1.79
 
Diluted
  $
1.93
    $
1.61
    $
1.77