Note 9 - Common Stock, Warrants and Preferred Stock (Details) - $ / shares			3 Months Ended	9 Months Ended
	May 08, 2018	Dec. 21, 2017	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Preferred Stock, Shares Authorized			10,000,000	10,000,000		10,000,000
Preferred Stock, Par Value			$ 0.01	$ 0.01	$ 0.01	$ 0.01
Private Placement
Units issued	7,500,000	2,880,867	7,500,000	10,380,867
Price per unit	$ 0.08	$ 0.30	$ 0.08	$ 0.30
Units issued, total proceeds	600,000	864,260	600,000	1,464,260
Price per unit, additional				$ 0.08
Warrants
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 detail 4				7,500,000
Warrants detail price per share 4				0.14
Class of Warrant or Right, Outstanding			28,340,873	28,340,873
Warrants outstanding weighted average exercise price				0.284