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Detail of Certain Balance Sheet Accounts - CIP (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Contracts in Progress [Abstract]
Costs Incurred Contract In Progress	$ 486,950	$ 409,075
Estimated Earnings on Contracts In Progress	55,606	48,618
Estimated Profit On Contract In Progress	542,556	457,693
Billings To Date	(559,036)	(466,368)
Contracts In Process Net	(16,480)	(8,675)
Costs in Excess of Billings on Uncompleted Contracts or Programs	13,438	15,554
Billings in Excess of Cost	29,918	24,229
Contracts In Process Net (From Balance Sheet)	$ (16,480)	$ (8,675)

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- Definition

Current amount billed on contracts to date.

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Costs incurred on all contracts in progress.

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Estimated amount of earnings on all contracts in progress.

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The net amount of costs incurred on contracts in progress and the estimated earnings

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Liability attributable to (i) billings in excess of costs under the percentage of completion contract accounting method representing the difference between contractually invoiced amounts (billings) and revenue recognized based, for example, on costs incurred to estimated total costs at period end or (ii) contractually invoiced amounts (billings) in excess of costs incurred and accumulated under the completed contract accounting method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 35
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57807-111642

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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-Topic 605
-SubTopic 35
-Section 45
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-URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57795-111642

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Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 310
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-URI http://asc.fasb.org/extlink&oid=68054760&loc=d3e55302-109406

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-URI http://asc.fasb.org/extlink&oid=68068069&loc=d3e57807-111642

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