CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net loss	$ (10,769)	$ (2,011)	$ (21,383)	$ (11,797)
Other comprehensive income (loss):
Foreign currency translation	2,962	3,544	(356)	3,352
Change in unrealized gains/losses from cash flow hedges:
Change in fair value of cash flow hedges, net of tax	(762)	(790)	581	(763)
Adjustment for net gains/losses realized and included in net income, net of tax	286	95	262	599
Total change in unrealized gains/losses realized from cash flow hedges, net of tax	(476)	(695)	843	(164)
Total other comprehensive income	2,486	2,849	487	3,188
Total comprehensive income (loss)	(8,283)	838	(20,896)	(8,609)
Noncontrolling interest in comprehensive loss of consolidated VIE, net of tax	(1,377)		(5,404)
Comprehensive income (loss) attributable to Cubic, net of tax	$ (6,906)	$ 838	$ (15,492)	$ (8,609)