Quarterly report pursuant to Section 13 or 15(d)

Inventories - Major Classifications of Inventories (Detail)

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Inventories - Major Classifications of Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Mar. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 2,677 $ 2,865
Work in process 12,163 13,470
Finished products 560 572
Inventory Gross 15,400 16,907
Less - progress payments 4,312 5,736
Total $ 11,088 $ 11,171