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Note 14 - Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
   
Common Stock
   
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
   
Number
    
Amount
    
Additional
Paid in
Capital
   
Retained
earnings
(deficit)
    
Accumulated
other
comprehensive
income (loss)
    
Total
stockholders'
equity
  
Balance on December 31, 2018
    
10,627,988
     $
15,823
     $
3,953
     $
60,810
     $
(810
 )   $
79,776
  
Exercise of Stock options
    
29,043
      
365
      
(294
 )    
-
      
-
      
71
  
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
    
(13,281
 )    
-
      
(340
 )    
-
      
-
      
(340
 )
Stock-based compensation
    
-
      
-
      
525
      
-
      
-
      
525
  
Net income
    
-
      
-
      
-
      
2,799
      
-
      
2,799
  
Other comprehensive income (loss)
    
-
      
-
      
-
      
-
      
610
      
610
  
Balances, March 31, 2019
    
10,643,750
     $
16,188
     $
3,844
     $
63,609
     $
(200
 )   $
83,441