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Note 17 - Net Income (Loss) Per Share (Tables)
12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Year ended December 31,
(in thousands, except per share data)
 
2017
   
2016
 
Basic
 
 
 
 
 
 
 
 
Net income (loss) attributable to Intelligent Systems Corporation
  $
473
    $
(1,112
)
Weighted average common shares outstanding
   
8,766
     
8,736
 
Net income (loss) per share
  $
0.05
    $
(0.13
)
                 
Diluted
 
 
 
 
 
 
 
 
Net income (loss) attributable to Intelligent Systems Corporation
  $
473
    $
(1,112
)
Weighted average common shares outstanding
   
8,766
     
8,736
 
Effect of dilutive potential common shares: stock options
   
116
     
--
 
Total
   
8,882
     
8,736
 
Net income (loss) per share
  $
0.05
    $
(0.13
)