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Note 3 - Inventories (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    June 30,  
    2017     2016  
                 
Raw materials   $
3,847
     $
4,040
  
Work-in-process    
1,963
      
2,212
  
Finished goods    
1,835
      
1,504
  
Total   $
7,645
     $
7,756