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Note B - Inventories, Net (Tables)
9 Months Ended
Mar. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
March 31,
2021
   
June 30,
2020
 
Raw materials
  $
23,093
    $
20,863
 
Work in progress
   
3,998
     
3,447
 
Finished goods
   
3,110
     
4,936
 
Reserve
   
(1,113
)
   
(1,274
)
    $
29,088
    $
27,972