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Segment Information (Detail) - Long-lived assets by geographic location - USD ($) $ in Thousands | Sep. 30, 2017 | Sep. 30, 2016
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Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-Lived Assets | $ 1,675 | $ 1,967
North America [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-Lived Assets | 1,078 | 1,348
Europe [Member] |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Long-Lived Assets | $ 597 | $ 619

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition 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. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |