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Acquired Intangible Assets - Intangible assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2019 | Sep. 30, 2018
Impaired Intangible Assets [Abstract] |  |
Gross | $ 1,173 | $ 1,173
Accumulated Amortization | 1,136 | 1,125
Net | $ 37 | $ 48
Customer list |  |
Impaired Intangible Assets [Abstract] |  |
Weighted Average Remaining Amortization Period | 5 years | 6 years
Gross | $ 910 | $ 910
Accumulated Amortization | 873 | 864
Net | $ 37 | $ 46
Non-compete agreements |  |
Impaired Intangible Assets [Abstract] |  |
Weighted Average Remaining Amortization Period | 0 years | 0 years
Gross | $ 93 | $ 93
Accumulated Amortization | 93 | 93
Net | $ 0 | $ 0
Developed technology |  |
Impaired Intangible Assets [Abstract] |  |
Weighted Average Remaining Amortization Period | 0 years | 0 years
Gross | $ 30 | $ 30
Accumulated Amortization | 30 | 30
Net | $ 0 | $ 0
Trade name |  |
Impaired Intangible Assets [Abstract] |  |
Weighted Average Remaining Amortization Period | 0 years | 0 years
Gross | $ 140 | $ 140
Accumulated Amortization | 140 | 138
Net | $ 0 | $ 2

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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