INVENTORIES (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
INVENTORIES
Finished products	$ 10,018	$ 644
Work in process and inventoried costs under long-term contracts	62,570	66,293
Materials and purchased parts	12,102	2,733
Customer advances	(18,328)	(5,970)
Net inventories	66,362	63,700
Costs incurred outside the scope of work or in advance of a contract award	700	1,900
General and administrative amounts for certain government contracts remaining in inventory	$ 2,300	$ 1,800