Note 12 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
	Dec. 11, 2018	Oct. 31, 2018	Jan. 14, 2019	Sep. 30, 2018	Sep. 30, 2017
Proceeds from Issuance of Common Stock				$ 1,222,412	$ 2,176,274
Stock Issued During Period, Shares, Warrants Exercised				1,473,000
Stock Issued During Period, Value, Warrants Exercised				$ 3,814,860
Debt Conversion, Original Debt, Amount				$ 1,192,445
Debt Conversion, Converted Instrument, Shares Issued				794,962
Subsequent Event [Member]
Stock Issued During Period, Shares, Warrants Exercised			333,000
Stock Issued During Period, Value, Warrants Exercised			$ 395,500
Debt Conversion, Original Debt, Amount		$ 46,992
Debt Conversion, Converted Instrument, Shares Issued		31,328
Equity Line Agreement [Member]
Stock Issued During Period, Value, New Issues				$ 447,801
Proceeds from Issuance of Common Stock				$ 1,222,412
Equity Line Agreement [Member] | Subsequent Event [Member]
Stock Issued During Period, Value, New Issues	$ 311,816
Proceeds from Issuance of Common Stock	$ 649,454