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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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