BUSINESS SEGMENT INFORMATION (Details 4) $ in Thousands	12 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($) item
Restructuring liability
Liability at the beginning of the period	$ 776	$ 2,220
Accrued costs	6,272	1,094	$ 8,139
Cash payments	(5,155)	(2,538)
Liability at the end of the period	1,893	$ 776	$ 2,220
Cubic Global Defense Systems
Restructuring plan
Reduction in employee headcount | item			230
Restructuring liability
Accrued costs	$ 4,600		$ 8,100