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Note 9 - Debt and Other Financing Arrangements (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
  2018     $
479
   
  2019      
891
   
  2020      
702
   
  2021      
446
   
  2022      
381
   
  Total long-term debt      
2,899
   
  Less current portion of long-term debt      
(957
)  
  Total long-term debt, net of current portion     $
1,942