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Note 3 - Inventories (Tables)
12 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
June 30,
 
   
2018
   
2017
 
                 
Raw materials
  $
4,179
    $
3,847
 
Work-in-process
   
2,207
     
1,963
 
Finished goods
   
1,355
     
1,835
 
Total
  $
7,741
    $
7,645