GOODWILL AND PURCHASED INTANGIBLE ASSETS (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Purchased intangible assets
Amortization expense	$ 22,602	$ 16,680	$ 14,828
Amortized intangible assets, Gross Carrying Amount	148,702	120,339
Amortized intangible assets, Accumulated Amortization	(85,084)	(62,797)
Total intangible assets, Net Carrying Amount	63,618	57,542
Expected amortization for purchased intangibles for each of the next five years
2015	18,705
2016	13,903
2017	9,859
2018	7,739
2019	4,481
Thereafter	8,931
Total expected amortization for purchased intangibles	63,618
Contract and program intangibles
Purchased intangible assets
Amortized intangible assets, Gross Carrying Amount	121,340	97,424
Amortized intangible assets, Accumulated Amortization	(73,234)	(54,712)
Total intangible assets, Net Carrying Amount	48,106	42,712
Other purchased intangibles
Purchased intangible assets
Amortized intangible assets, Gross Carrying Amount	27,362	22,915
Amortized intangible assets, Accumulated Amortization	(11,850)	(8,085)
Total intangible assets, Net Carrying Amount	15,512	14,830
Transportation Systems
Expected amortization for purchased intangibles for each of the next five years
2015	8,886
2016	7,686
2017	6,566
2018	5,442
2019	3,048
Thereafter	3,750
Total expected amortization for purchased intangibles	35,378
Defense Systems
Expected amortization for purchased intangibles for each of the next five years
2015	2,129
2016	1,503
2017	841
2018	522
2019	249
Thereafter	53
Total expected amortization for purchased intangibles	5,297
Mission Support Services
Expected amortization for purchased intangibles for each of the next five years
2015	7,690
2016	4,714
2017	2,452
2018	1,775
2019	1,184
Thereafter	5,128
Total expected amortization for purchased intangibles	$ 22,943