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Goodwill and Intangible Assets - Intangible Assets by Major Class Subject to Amortization (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
Intangible assets: |  |
Original Cost | $ 17,334 | $ 17,334
Accumulated Amortization | 16,455 | 15,405
Impairment | 0 | 0
Currency Translation | (5) | (39)
Net Book Value | $ 874 | $ 1,890
Trade name |  |
Intangible assets: |  |
Weighted average life | 8 years | 8 years
Original Cost | $ 1,876 | $ 1,876
Accumulated Amortization | 1,850 | 1,729
Impairment | 0 | 0
Currency Translation | 0 | (12)
Net Book Value | $ 26 | $ 135
Technology asset |  |
Intangible assets: |  |
Weighted average life | 5 years | 5 years
Original Cost | $ 1,869 | $ 1,869
Accumulated Amortization | 1,869 | 1,843
Impairment | 0 | 0
Currency Translation | 0 | (24)
Net Book Value | $ 0 | $ 2
Customer relationships |  |
Intangible assets: |  |
Weighted average life | 10 years | 10 years
Original Cost | $ 13,589 | $ 13,589
Accumulated Amortization | 12,736 | 11,833
Impairment | 0 | 0
Currency Translation | (5) | (3)
Net Book Value | $ 848 | $ 1,753

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- 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://www.xbrl.org/2003/role/disclosureRef -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 of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for foreign currency translation adjustments and purchase accounting adjustments. + References No definition available. + Details
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