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Note 6 - Inventories (Tables)
6 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
December 31,
2018
   
June 30,
2018
 
Raw materials
  $
50,557
    $
46,833
 
Work in process
   
32,164
     
30,526
 
Finished goods
   
26,702
     
26,941
 
Total
  $
109,423
    $
104,300