Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2017	Sep. 30, 2016
IntangibleAssets [Line Items]
Gross Carrying Amount	$ 40,969	$ 35,871
Accumulated Amortization	9,556	4,148
INTANGIBLE ASSETS, net of amortization	31,413	31,723
Trademarks And Trade Names - Finite [Member]
IntangibleAssets [Line Items]
Gross Carrying Amount	4,643	3,845
Accumulated Amortization	440	139
INTANGIBLE ASSETS, net of amortization	$ 4,203	$ 3,706
Trademarks And Trade Names - Finite [Member] \| Minimum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	5 years	5 years
Trademarks And Trade Names - Finite [Member] \| Maximum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	20 years	20 years
Technical Library [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	20 years	20 years
Gross Carrying Amount	$ 400	$ 400
Accumulated Amortization	81	61
INTANGIBLE ASSETS, net of amortization	319	339
Customer Relationships [Member]
IntangibleAssets [Line Items]
Gross Carrying Amount	31,115	27,414
Accumulated Amortization	4,741	2,003
INTANGIBLE ASSETS, net of amortization	$ 26,374	$ 25,411
Customer Relationships [Member] \| Minimum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	6 years	6 years
Customer Relationships [Member] \| Maximum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	15 years	15 years
Develeoped Technology [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	4 years	1 year
Gross Carrying Amount	$ 0	$ 400
Accumulated Amortization	0	358
INTANGIBLE ASSETS, net of amortization	$ 0	$ 42
Order Backlog [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	1 year	1 year
Gross Carrying Amount	$ 2,412	$ 1,621
Accumulated Amortization	2,130	545
INTANGIBLE ASSETS, net of amortization	$ 282	$ 1,076
Construction Contract Value [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	1 year	1 year
Gross Carrying Amount	$ 2,399	$ 2,191
Accumulated Amortization	2,164	1,042
INTANGIBLE ASSETS, net of amortization	$ 235	$ 1,149

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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