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Note 11 - Earnings (Loss) Per Share (Tables)
 6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three Months Ended
    
Six Months Ended
  
   
June 30,
    
June 30,
  
Numerator:
  
201
8
    
2017
    
201
8
    
2017
  
Net income (loss)
  
$
2,544
     $
(2,846
 )  
$
3,579
     $
(7,736
 )
Denominator:
                                
Denominator for basic earnings (loss) per share – weighted average shares
  
 
8,205
      
8,028
    
 
8,141
      
8,028
  
Effect of dilutive securities:
                                
Employee restricted stock
  
 
22
      
--
    
 
26
      
--
  
Denominator for diluted earnings per share – adjusted weighted average shares and assumed conversion
  
 
8,227
      
8,028
    
 
8,167
      
8,028
  
Basic earnings (loss) per share
  
$
0.31
     $
(0.35
 )  
$
0.44
     $
(0.96
 )
Diluted earnings (loss) per share
  
$
0.31
     $
(0.35
 )  
$
0.44
     $
(0.96
 )
Weighted average anti-dilutive employee restricted stock
  
 
99
      
--
    
 
61
      
2