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