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Note 4 - Net Earnings (Loss) Per Share (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
    Three Months Ended
March 31,
    2017   2016
Numerator:        
Numerator for basic and diluted earnings per share, net income (loss) available to common shareholders   $
(286,583
 )   $
(32,002
 )
Denominator:                
Denominator for basic earnings per share, weighted average shares outstanding    
8,485,183
      
7,719,248
  
Effect of dilutive securities    
-
      
-
  
Denominator for diluted earnings per share, adjusted weighted average shares and assumed conversion    
8,485,183
      
7,719,248
  
Basic earnings (loss) per common share   $
(0.03
 )   $
0.00
  
Diluted earnings (loss) per common share and common share equivalent   $
(0.03
 )   $
0.00
  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   
Three Months Ended

March 31,
   
2017
  
2016
Anti-dilutive awards and options    
3,357,831
 
    
4,325,676