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Note 6 - Net Income Per Share
9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Earnings Per Share [Text Block]
6.
NET INCOME PER SHARE
 
Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding for the period (excluding outstanding stock options and shares subject to repurchase). Diluted net income per share is computed using the weighted-average number of common shares outstanding for the period plus the potential effect of dilutive securities that are convertible into common shares (using the treasury stock method), except in cases in which the effect would be anti-dilutive. The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income per share (in thousands except per share amount):
 
   
Three Months
   
Nine Months
 
   
Ended September 30,
   
Ended September 30,
 
   
2018
   
2017
   
2018
   
2017
 
Numerator:
                               
Net income (loss)
  $
(2,082
)   $
590
    $
(4,602
)   $
1,297
 
Denominator:
                               
Basic weighted-average common shares outstanding
   
32,184
     
32,078
     
32,105
     
32,060
 
Effect of dilutive options and restricted stock
   
-
     
891
     
-
     
1,257
 
Diluted weighted average shares outstanding
   
32,184
     
32,969
     
32,105
     
33,317
 
                                 
Net income (loss) per share - Basic
  $
(0.06
)   $
0.02
    $
(0.14
)   $
0.04
 
Net income (loss) per share - Diluted
  $
(0.06
)   $
0.02
    $
(0.14
)   $
0.04
 
 
For the
three
and
nine
months ended
September 30, 2018, 
there are 
no
 potential dilutive common shares included in the computation of diluted net income (loss) per share because there was a net loss for both periods.
 
The following table sets forth potential shares of common stock that are
not
included in the diluted net income per share calculation above because to do so would be anti-dilutive for the periods indicated (in thousands):  
 
   
Three Months
   
Nine Months
 
   
Ended September 30,
   
Ended September 30,
 
   
2018
   
2017
   
2018
   
2017
 
Outstanding stock options
   
-
     
211
     
-
     
109
 
Nonvested restricted stock units
   
-
     
15
     
-
     
12
 
Employee Stock Purchase Plan
   
-
     
68
     
-
     
42
 
Total
   
-
     
294
     
-
     
163