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Note 4 - Inventories (Tables)
12 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
June 30
 
2019
   
2018
 
Raw materials
  $
43,117
    $
46,859
 
Work in process
   
28,120
     
30,527
 
Finished goods
   
17,408
     
26,914
 
Total
  $
88,645
    $
104,300