Quarterly report pursuant to Section 13 or 15(d)

Inventories - Major Classifications of Inventories (Detail)

v3.6.0.2
Inventories - Major Classifications of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Mar. 31, 2016
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 3,159 $ 3,178
Work in process 11,296 11,615
Finished products 978 659
Inventory Gross 15,433 15,452
Less - progress payments 6,324 4,641
Total $ 9,109 $ 10,811