Note 10 - Subsequent Events (Details Textual) - USD ($)	Apr. 25, 2018	Oct. 26, 2017	Sep. 30, 2016	Mar. 10, 2016
Shares Authorized During Period, Private Placement		15,000,000	10,000,000	5,000,000
Amount of Private Placement		$ 2,812,500	$ 1,875,000	$ 937,500
Private Placement [Member] | Subsequent Event [Member]
Shares Authorized During Period, Private Placement	30,000,000
Amount of Private Placement	$ 7,500,000