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Note 12 - Indebtedness (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
September 30,
2019
 
December 31,
2018
Revolving credit facility   $
-
    $
8,000
 
Term loan    
15,000
     
17,143
 
Total long-term debt    
15,000
     
25,143
 
Current portion    
(2,857
)    
(2,857
)
Long-term debt, excluding current portion   $
12,143
    $
22,286