Note 8 - Common Stock, Warrants and Preferred Stock (Details) - USD ($)	6 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017
Preferred Stock, Shares Authorized	10,000,000		10,000,000
Preferred Stock, Par Value	$ 0.01	$ 0.01	$ 0.01
Private Placement
Private Placement Description	On October 12, 2017, we initiated a $1,250,000 private placement offering of Units of the Company at a price of $0.30 per Unit, with an over-allotment option to increase the offering by up to 20%, solely to persons who qualify as accredited investors (the 'Offering'). Each Unit in the Offering consisted of one share of common stock of the Company and one common share purchase warrant (each a “Warrant”), with each Warrant exercisable to acquire an additional share of common stock of the Company at a price of $0.45 per share until the warrant expiration date of October 31, 2022.
Private Placement Units Price Per Unit	2,880,867
Private Placement Units Price Per Unit	$ 0.30
Proceeds from issuance of private placement units	$ 864,260
Proceeds from issuance of private placement units, net	$ 821,767
Warrants
Warrants issued with offering	2,880,867
Warrants detail 1	9,960,006
Warrants detail price per share 1	0.25
Warrants detail 2	8,000,000
Warrants detail price per share 2	0.40
Warrants detail 3	2,880,867
Warrants detail price per share 3	0.45
Warrants outstanding	20,840,873
Warrants outstanding, weighted average exercise price	0.335