The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue recognition
Sales	$ 318,488us-gaap_SalesRevenueNet	$ 307,137us-gaap_SalesRevenueNet
Operating income (loss)	7,179us-gaap_OperatingIncomeLoss	11,830us-gaap_OperatingIncomeLoss
Depreciation and amortization	8,947	7,377
Transportation Systems
Revenue recognition
Sales	131,500	127,100
Operating income (loss)	12,100	3,100
Depreciation and amortization	3,100	2,600
Mission Support Services
Revenue recognition
Sales	89,000	99,200
Operating income (loss)		2,800
Depreciation and amortization	2,400	3,200
Defense Systems
Revenue recognition
Sales	98,000	80,800
Operating income (loss)	(2,700)	7,100
Depreciation and amortization	3,200	1,400
Other
Revenue recognition
Depreciation and amortization	200	200
Adjustments
Revenue recognition
Operating income (loss)	2,073		2,400	300
Adjustments \| Audit Investigation Error
Revenue recognition
Operating income (loss)	747
Adjustments \| Other Errors Member
Revenue recognition
Operating income (loss)	1,326
Unallocated corporate expenses and other
Revenue recognition
Operating income (loss)	$ (2,200)	$ (1,200)