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Note 6 - Inventories (Tables)
12 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
June 30,
2018
   
June 30,
2017
 
Raw materials and supplies
  $
23,764
    $
26,293
 
Goods in process and finished parts
   
18,423
     
16,419
 
Finished goods
   
40,739
     
41,591
 
     
82,926
     
84,303
 
LIFO reserve
   
(24,887
)
   
(26,206
)
    $
58,039
    $
58,097