Restatement of Condensed Consolidated Financial Statements (Details 3) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Net sales:
Products	$ 146,789	$ 167,036	$ 268,770	$ 301,754
Services	207,703	201,573	392,859	381,651
Total net sales	354,492	368,609	661,629	683,405
Costs and expenses:
Products	110,185	119,145	196,944	219,032
Services	162,693	153,320	324,180	297,391
Selling, general and administrative	48,265	41,320	85,019	82,263
Restructuring costs	203	6,084	203	6,084
Research and development	4,959	7,098	9,873	12,920
Amortization of purchased intangibles	6,010	4,266	11,403	7,830
Total costs and expenses	332,315	331,233	627,622	625,520
Operating income	22,177	37,376	34,007	57,885
Other income (expense):
Interest and dividend income	118	312	363	749
Interest expense	(752)	(657)	(1,613)	(1,522)
Other income (expense) - net	386	(53)	40	49
Income before income taxes	21,929	36,978	32,797	57,161
Income taxes	5,809	7,276	8,248	13,145
Net income	16,120	29,702	24,549	44,016
Less noncontrolling interest in income of VIE	28	52	69	125
Net income attributable to Cubic	16,092	29,650	24,480	43,891
Net income per share attributable to Cubic:
Basic (in dollars per share)	$ 0.60	$ 1.11	$ 0.91	$ 1.64
Diluted (in dollars per share)	$ 0.60	$ 1.11	$ 0.91	$ 1.64
Weighted average shares used in per share calculations:
Basic (in shares)	26,786	26,736	26,785	26,736
Diluted (in shares)	26,901	26,736	26,892	26,736
Previously Reported
Net sales:
Products		164,968		300,669
Services		199,337		377,007
Total net sales		364,305		677,676
Costs and expenses:
Products		117,123		218,018
Services		153,766		297,617
Selling, general and administrative		41,320		82,317
Restructuring costs		6,084		6,084
Research and development		7,098		12,920
Amortization of purchased intangibles		4,266		7,830
Total costs and expenses		329,657		624,786
Operating income		34,648		52,890
Other income (expense):
Interest and dividend income		312		749
Interest expense		(654)		(1,516)
Other income (expense) - net		(53)		49
Income before income taxes		34,253		52,172
Income taxes		7,043		12,443
Net income		27,210		39,729
Less noncontrolling interest in income of VIE		52		125
Net income attributable to Cubic		27,158		39,604
Net income per share attributable to Cubic:
Basic (in dollars per share)		$ 1.02		$ 1.48
Diluted (in dollars per share)		$ 1.02		$ 1.48
Weighted average shares used in per share calculations:
Basic (in shares)		26,736		26,736
Diluted (in shares)		26,736		26,736
Adjustments
Net sales:
Products		2,068		1,085
Services		2,236		4,644
Total net sales		4,304		5,729
Costs and expenses:
Products		2,022		1,014
Services		(446)		(226)
Selling, general and administrative				(54)
Total costs and expenses		1,576		734
Operating income		2,728		4,995
Other income (expense):
Interest expense		(3)		(6)
Income before income taxes		2,725		4,989
Income taxes		233		702
Net income		2,492		4,287
Net income attributable to Cubic		$ 2,492		$ 4,287
Net income per share attributable to Cubic:
Basic (in dollars per share)		$ 0.09		$ 0.16
Diluted (in dollars per share)		$ 0.09		$ 0.16