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Note B - Inventories (Tables)
12 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
20
20
   
2019
 
Raw materials
  $
20,863
    $
18,322
 
Work in progress
   
3,447
     
3,785
 
Finished goods
   
4,936
     
5,002
 
Reserve
   
(1,274
)
   
(1,106
)
    $
27,972
    $
26,003