Note 7 - Stockholders' Equity - Stock Options Activity (Details) - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Sep. 30, 2016
Outstanding, beginning balance (in shares)	4,225,537
Outstanding, weighted-average exercise price, beginning balance (in dollars per share)	$ 1.79
Outstanding, weighted-average remaining contractual life	3 years 146 days		4 years 36 days
Outstanding, aggregate intrinsic value	$ 158,675
Granted, options (in shares)	35,000	0
Granted, weighted-average exercise price (in dollars per share)	$ 1
Outstanding, ending balance (in shares)	4,260,537		4,225,537
Outstanding, weighted-average exercise price, ending balance (in dollars per share)	$ 1.78		$ 1.79
Outstanding, aggregate intrinsic value	$ 158,675		$ 158,675	$ 124,375
Exercisable, options (in shares)				4,210,537
Exercisable, weighted-average exercise price (in dollars per share)				$ 1.80
Exercisable, weighted-average remaining contractual life	3 years 146 days
Exercisable, aggregate intrinsic value				$ 111,875