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Note 5 - Inventories (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    December 31,
    2018   2017
Components, spare parts    
3,496
      
3,909
  
Work-in-progress    
576
      
729
  
Finished goods – own manufactured products    
2,672
      
1,167
  
Finished goods – distribution  products    
1,442
      
1,656
  
Total gross inventories    
8,186
      
7,461
  
Less: allowance for slow-moving inventory and net realizable value    
(974
 )    
(722
 )
Total    
7,212
      
6,739