Basis for Presentation (Details 2) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Net sales:
Products	$ 133,762		$ 136,649	$ 392,884	$ 405,419
Costs and expenses:
Products	94,381		108,301	288,926	305,245
Services	175,334		156,726	480,671	480,906
Selling, general and administrative expenses	55,127		46,489	155,603	131,508
Total costs and expenses	337,513		321,142	964,450	948,764
Operating income	10,293		19,215	40,678	53,222
Income before income taxes	9,345		17,208	37,800	50,005
Income taxes	559		4,992	34,863	13,240
Net income attributable to Cubic	$ 8,780		$ 12,206	$ 2,908	$ 36,686
Adjustments
Net sales:
Products		$ 1,264
Costs and expenses:
Products		138
Services		438
Selling, general and administrative expenses		(1,385)
Total costs and expenses		(809)
Operating income		2,073				$ 2,400	$ 300
Income before income taxes		2,073
Income taxes		789
Net income attributable to Cubic		1,284
Adjustments | Audit Committee Investigation Error
Net sales:
Products		747
Costs and expenses:
Operating income		747
Income before income taxes		747
Income taxes		299
Net income attributable to Cubic		448
Adjustments | Other Errors
Net sales:
Products		517
Costs and expenses:
Products		138
Services		438
Selling, general and administrative expenses		(1,385)
Total costs and expenses		(809)
Operating income		1,326
Income before income taxes		1,326
Income taxes		490
Net income attributable to Cubic		$ 836