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Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2017
Intangible Assets [Abstract] |
Schedule of Finite and Indefinite-Lived Intangible Assets [Table Text Block] | The gross and net carrying values of intangible assets as of the balance sheet dates, by major intangible asset class are as follows (in millions):
| September 30, 2017 |  | September 30, 2016
| Gross Amount |  | Accumulated Amortization |  | Net Amount |  | Gross Amount |  | Accumulated Amortization |  | Net Amount
Intangible assets subject to amortization: |  |  |  |  |  |  |  |  |  |  |
Trade name | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1.1 |  |  | $ | (0.6 | ) |  | $ | 0.5 |
Software programs/platforms | 2.7 |  |  | (2.5 | ) |  | 0.2 |  |  | 2.7 |  |  | (2.4 | ) |  | 0.3 |
Customer base | 20.0 |  |  | (7.9 | ) |  | 12.1 |  |  | 14.0 |  |  | (5.7 | ) |  | 8.3 |
Total intangible assets | $ | 22.7 |  |  | $ | (10.4 | ) |  | $ | 12.3 |  |  | $ | 17.8 |  |  | $ | (8.7 | ) |  | $ | 9.1 |
Schedule of Expected Amortization Expense [Table Text Block] | Amortization expense related to intangible assets was $2.8 million, $1.6 million, and $1.5 million for the fiscal years ended September 30, 2017, 2016, and 2015, respectively. The estimated future amortization expense as of September 30, 2017 is as follows (in millions):
Year ending September 30, |
2018 | $ | 2.2 |
2019 | 2.2 |
2020 | 2.0 |
2021 | 1.9 |
2022 and thereafter | 4.0 |
| $ | 12.3 |

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- Definition Intangible Assets [Abstract] + References No definition available. + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life or exist in perpetuity, by either major class or business segment. + References No definition available. + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + 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) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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