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Note 11 - Net Income Per Share
 12 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
1
1
.   NET INCOME PER SHARE
 
The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):
 
 
 
Year Ended December 31,
 
 
 
2016
 
 
2015
 
 
2014
 
Numerator:
                        
Net income
   $
52,720
    $
35,172
    $
35,495
 
                         
Denominator:
                        
Weighted-average outstanding shares used to compute basic net income per share
    
40,436
     
39,470
     
38,686
 
Effect of dilutive securities
    
1,479
     
1,399
     
1,107
 
Weighted-average outstanding shares used to compute diluted net income per share
    
41,915
     
40,869
     
39,793
 
                         
Net income per share:
                        
Basic
  $
1.30
    $
0.89
    $
0.92
 
Diluted
   $
1.26
    $
0.86
    $
0.89
 
 
Anti-dilutive common stock equivalents were not material in any of the periods presented.