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Note 18 - Earnings Per Share
 12 Months Ended
Dec. 31, 2019
Notes to Financial Statements  
Earnings Per Share [Text Block]
18.
   Earnings Per Share
 
Basic earnings per share is computed by dividing net income by the weighted average number of shares of common stock outstanding during each period.
 
Diluted earnings per share is computed by dividing the net income by the weighted average number of shares of common stock and equivalents (stock options and warrants), unless anti-dilutive, during each period.
 
Consolidated Earnings per Share
  
   
For the Year Ended December 31,
  
   
2019
    
2018
  
Loss from continuing operations
    
(5,808,005
 )    
(3,457,146
 )
Loss from discontinued operations
    
(3,213,536
 )    
(263,578
 )
                 
Basic loss per common share
                
Continuing operations
    
(1.51
 )    
(0.93
 )
Discontinued operations
    
(0.84
 )    
(0.07
 )
Basic loss per common share
   $
(2.10
 )   $
(1.00
 )
                 
Diluted loss per common share
                
Continuing operations
   $
(1.27
 )   $
(0.93
 )
Discontinued operations
    
(0.84
 )    
(0.07
 )
Diluted loss per common share
   $
(2.10
 )   $
(1.00
 )
                 
Weighted average number of shares and equivalent shares of common stock outstanding:
                
Basic
    
3,835,950
      
3,578,885
  
                 
Diluted
    
3,835,950
      
3,578,885