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Note 8 - Goodwill and Intangible Assets (Details Textual) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Sep. 30, 2018
Goodwill, Ending Balance | $ 2,364,633 | $ 2,445,990
Goodwill and Intangible Assets, Foreign Currency Translation Gain (Loss) | (130,403) |
Goodwill, Impairment Loss | 0 |
Patents [Member] |  |
Impairment of Intangible Assets, Finite-lived | $ 0 | $ 11,133

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) goodwill and intangible assets. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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