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Note 11 - Other Assets
12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
Other Assets Disclosure [Text Block]
(
1
1
)
Other Assets
 
Other assets consist of the following (in thousands):
 
   
December 31,
 
   
2018
   
2017
 
Long term spare parts
  $
646
    $
871
 
Long term deposits
   
507
     
578
 
Other
   
362
     
129
 
Total
  $
1,515
    $
1,578