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Inventories (Tables)
 12 Months Ended
Jun. 30, 2016
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
June 30,
2016
 
2015
(In thousands)
 
 
 
Raw materials
$
11,698

 
$
13,900

Work in process
10,107

 
12,053

Finished goods
1,834

 
2,428

 
23,639

 
28,381

Reserve for LIFO cost valuation
(2,961
)
 
(3,700
)
Inventories
$
20,678

 
$
24,681