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Note 7 - Net Income Per Share (Tables)
3 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Three Months Ended
 
 
 
June 30
,
 
 
 
2017
 
 
2016
 
Net income available for stockholders
  $
1,517
    $
1,930
 
Weighted average outstanding shares of common stock
   
3,736
     
3,646
 
Dilutive effect of stock options
   
187
     
156
 
Common stock and equivalents
   
3,923
     
3,802
 
                 
Net income per share:
               
Basic
  $
0.41
    $
0.53
 
Diluted
   
0.39
     
0.51