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Supporting Financial Information - Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ (2,055)	$ (1,058)
Goodwill, Gross		0
Intangible Assets, Gross (Excluding Goodwill)		324
Amortization of Intangible Assets	(1,321)
Goodwill	25,989		$ 35,000
Finite-Lived Intangible Assets, Net	15,568
Goodwill and other intangible assets, net	41,557	42,304
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(1,939)	(993)
Finite-Lived Intangible Assets, Gross		300
Amortization of Intangible Assets	(1,246)
Finite-Lived Intangible Assets, Net	14,687
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(56)	(65)
Finite-Lived Intangible Assets, Gross		45
Amortization of Intangible Assets	(36)
Finite-Lived Intangible Assets, Net	424
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	(60)	0
Finite-Lived Intangible Assets, Gross		$ (21)
Amortization of Intangible Assets	(39)
Finite-Lived Intangible Assets, Net	$ 457

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Finite-Lived Intangible Assets, Prior Period Amortization Adjustment

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 30
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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

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