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Summary of Significant Accounting Policies - Intangibles (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Jun. 30, 2017 | Sep. 30, 2016
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 7,463 | $ 7,378
Accumulated Amortization | (3,820) | (3,278)
Net Carrying Amount | 3,643 | 4,100
Customer lists |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 2,446 | 2,432
Accumulated Amortization | (1,406) | (1,164)
Net Carrying Amount | $ 1,040 | 1,268
Customer lists | Minimum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 6 years |
Customer lists | Maximum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 10 years |
Technology |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 3,274 | 3,214
Accumulated Amortization | (1,876) | (1,678)
Net Carrying Amount | $ 1,398 | 1,536
Technology | Minimum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 5 years |
Technology | Maximum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 10 years |
Trade names |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 1,460 | 1,455
Accumulated Amortization | (257) | (219)
Net Carrying Amount | $ 1,203 | 1,236
Trade names | Minimum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 10 years |
Trade names | Maximum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 15 years |
Other |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 283 | 277
Accumulated Amortization | (281) | (217)
Net Carrying Amount | $ 2 | $ 60
Other | Minimum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 2 years |
Other | Maximum |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |
Useful Life | 10 years |

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