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Note 5 - Intangible Assets, net (Details) - Finite-lived Intangible Assets Amortization Expense
Sep. 30, 2019
USD ($)
Finite-lived Intangible Assets Amortization Expense [Abstract]  
2020 $ 406,704
2021 406,704
2022 406,704
2023 406,704
2024 $ 406,704