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Note 9 - Other Current Assets
 12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Other Current Assets [Text Block]
(
9
)         
Other Current Assets
 
Other current assets consist of the following (in thousands):
 
   
December 31,
 
   
2017
    
2016
  
Prepaid expenses
   $
571
     $
1,973
  
Other
    
1,432
      
757
  
Total   $
2,003
     $
2,730
  
 
Included in other current assets are income and VAT taxes refundable, tools, spare parts and other items,
none
of which exceed
5%
of total current assets.