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Inventories
3 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories
3. Inventories
     Inventories consist of the following:
                 
    September 30,     June 30,  
    2011     2011  
    (Unaudited)          
     
    (In thousands)  
Raw materials and component parts
  $ 1,415     $ 1,496  
Work-in-progress
    53,836       43,187  
     
 
    55,251       44,683  
Less progress payments
    2,500       2,254  
     
 
  $ 52,751     $ 42,429