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Note 7 - Inventories (Tables)
9 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
03/31/2020
   
6/30/2019
 
Raw material and supplies
  $
27,269
    $
26,106
 
Goods in process and finished parts
   
14,610
     
17,464
 
Finished goods
   
39,989
     
41,500
 
     
81,868
     
85,070
 
LIFO Reserve
   
(23,564
)
   
(23,280
)
    $
58,304
    $
61,790