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Note 4 - Inventories (Tables)
12 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
June 30,
   
June 30,
 
(In thousands)
 
201
8
   
2017
 
                 
Inventories:
               
Raw materials
 
$
31,795
    $
32,421
 
Work-in-process
 
 
3,833
     
3,527
 
Finished goods
 
 
15,366
     
14,060
 
Total Inventories
 
$
50,994
    $
50,008