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Note 5 - Inventories (Tables)
9 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
March 31,
   
June 30,
 
(In thousands)
 
2018
   
2017
 
                 
Inventories:
               
Raw materials
  $
30,987
    $
32,421
 
Work-in-process
   
3,417
     
3,527
 
Finished goods
   
17,283
     
14,060
 
Total Inventories
  $
51,687
    $
50,008