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Note 11 - Debt (Details Textual)	3 Months Ended	9 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)
Term Loans [Member]
Interest Expense, Debt, Total	$ 4,390	$ 14,205
Collateral Pledged [Member] | Term Loans [Member]
Restricted Cash, Total	444,482	444,482
Collateral Pledged [Member] | Loan with Ministry of Industry, Tourism, and Commerce, Due December 31, 2018 [Member] | Genasys Acquisition [Member] | Loans With Governmental Agencies [Member]
Restricted Cash, Total	24,688	24,688
Collateral Pledged [Member] | Loan with Ministry of Industry, Tourism, and Commerce, Due December 31, 2019 [Member] | Genasys Acquisition [Member] | Loans With Governmental Agencies [Member]
Restricted Cash, Total	$ 38,165	$ 38,165
Cash Pledged as Collateral, Percentage of the Original Principal Received	25.00%	25.00%
Collateral Pledged [Member] | Loan with Ministry of Industry, Tourism, and Commerce, Due January 31, 2020 [Member] | Genasys Acquisition [Member] | Loans With Governmental Agencies [Member]
Restricted Cash, Total	$ 60,290	$ 60,290
Cash Pledged as Collateral, Percentage of the Original Principal Received	35.00%	35.00%
Collateral Pledged [Member] | Loan with Ministry of Science and Innovation, Due February 2, 2024 [Member] | Genasys Acquisition [Member] | Loans With Governmental Agencies [Member]
Restricted Cash, Total	$ 280,243	$ 280,243
Cash Pledged as Collateral, Percentage of the Original Principal Received	66.60%	66.60%

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+ References

No definition available.

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870

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-Topic 220
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-Section S99
-Paragraph 2
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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Name Accounting Standards Codification
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