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Note 6 - Inventories (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
June 30,
2017
    
June 30,
2016
  
Raw materials and supplies
   $
26,293
     $
29,209
  
Goods in process and finished parts
    
16,419
      
16,459
  
Finished goods
    
41,591
      
39,449
  
     
84,303
      
85,117
  
LIFO reserve
    
(26,206
)
    
(28,796
)
    $
58,097
     $
56,321