Quarterly report pursuant to Section 13 or 15(d)

Inventories - Major Classifications of Inventories (Detail)

v2.4.1.9
Inventories - Major Classifications of Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Mar. 31, 2014
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 3,074us-gaap_InventoryRawMaterials $ 3,185us-gaap_InventoryRawMaterials
Work in process 17,077us-gaap_InventoryWorkInProcess 17,767us-gaap_InventoryWorkInProcess
Finished products 675us-gaap_InventoryFinishedGoods 646us-gaap_InventoryFinishedGoods
Inventory Gross 20,826us-gaap_InventoryGross 21,598us-gaap_InventoryGross
Less - progress payments 6,194us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms 5,080us-gaap_ProgressPaymentsNettedAgainstInventoryForLongTermContractsOrPrograms
Total $ 14,632us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings $ 16,518us-gaap_InventoryNetOfAllowancesCustomerAdvancesAndProgressBillings