Annual report pursuant to Section 13 and 15(d)

Inventories - Major Classifications of Inventories (Detail)

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Inventories - Major Classifications of Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Mar. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 3,185 $ 2,865
Work in process 17,767 13,470
Finished products 646 572
Inventory Gross 21,598 16,907
Less - progress payments 5,080 5,736
Total $ 16,518 $ 11,171