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Supporting Financial Information - Goodwill (Details) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (1,615) | $ (1,058) |
Goodwill, Gross |  | 0 |
Intangible Assets, Gross (Excluding Goodwill) |  | 324 |
Amortization of Intangible Assets | (881) |  |
Goodwill | 25,989 |  | $ 35,000
Finite-Lived Intangible Assets, Net | 16,008 |  |
Goodwill and other intangible assets, net | 41,997 | 42,304 |
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (1,523) | (993) |
Finite-Lived Intangible Assets, Gross |  | 300 |
Amortization of Intangible Assets | (830) |  |
Finite-Lived Intangible Assets, Net | 15,103 |  |
Noncompete Agreements [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (44) | (65) |
Finite-Lived Intangible Assets, Gross |  | 45 |
Amortization of Intangible Assets | (24) |  |
Finite-Lived Intangible Assets, Net | 436 |  |
Trade Names [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (48) | 0 |
Finite-Lived Intangible Assets, Gross |  | $ (21) |
Amortization of Intangible Assets | (27) |  |
Finite-Lived Intangible Assets, Net | $ 469 |  |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after 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 + Details
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