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Note 11 - (Loss) Income Per Common and Common Stock Equivalent Share (Tables)
 12 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Year Ended
  
   
2020
      
2019*
  
Numerator
      
 
      
 
Net (loss) income
   $
(465,597
 )   $
305,989
  
                 
Denominator
      
 
      
 
Weighted average shares, basic
    
7,404,831
      
7,401,030
  
Dilutive effect of stock compensation awards (1)
    
-
      
6,797
  
Diluted shares
    
7,404,831
      
7,407,827
  
                 
Net (loss) income attributable to common shareholders per share:
                
Basic
   $
(0.06
 )   $
0.04
  
Diluted
   $
(0.06
 )   $
0.04