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Note 3 - Earnings Per Share (Tables)
 9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
    
Nine Months Ended
  
   
September 30,
    
September 30,
  
   
2020
    
2019
    
2020
    
2019
  
Basic earnings per share calculation:
      
 
      
 
      
 
      
 
Net (loss) income
   $
(1,003
 )   $
(898
 )   $
480
     $
(2,958
 )
Weighted average number of common shares outstanding
    
16,866,134
      
16,235,961
      
16,741,481
      
16,024,217
  
Basic net (loss) income per share
   $
(0.06
 )   $
(0.06
 )   $
0.03
     $
(0.18
 )
Diluted earnings per share calculation:
      
 
      
 
      
 
      
 
Net (loss) income
   $
(1,003
 )   $
(898
 )   $
480
     $
(2,958
 )
Weighted average number of common shares outstanding
    
16,866,134
      
16,235,961
      
16,741,481
      
16,024,217
  
Common stock equivalents:
                                
Non-vested stock awards (1)
    
—
      
—
      
536,920
      
—
  
Weighted average number of common shares outstanding
    
16,866,134
      
16,235,961
      
17,278,401
      
16,024,217
  
Diluted net (loss) income per share
   $
(0.06
 )   $
(0.06
 )   $
0.03
     $
(0.18
 )