CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ 4,410	$ (21,957)	$ (7,387)	$ (24,364)
Other comprehensive income (loss):
Foreign currency translation	(10,628)	11,193	(7,276)	(2,111)
Change in unrealized gains/losses from cash flow hedges:
Change in fair value of cash flow hedges, net of tax	640	930	(123)	(39)
Adjustment for net gains/losses realized and included in net income, net of tax	502	(1,204)	1,101	(1,204)
Total change in unrealized gains/losses realized from cash flow hedges, net of tax	1,142	(274)	978	(1,243)
Total other comprehensive income (loss)	(9,486)	10,919	(6,298)	(3,354)
Total comprehensive loss	(5,076)	(11,038)	(13,685)	(27,718)
Noncontrolling interest in comprehensive loss of consolidated VIE, net of tax	(1,881)		(1,881)
Comprehensive loss attributable to Cubic, net of tax	$ (3,195)	$ (11,038)	$ (11,804)	$ (27,718)