Note 10 - Stock Option Activity (Details)	9 Months Ended
	Jun. 30, 2016 $ / shares shares
Number of Shares Outstanding, Beginning Balance (in shares) | shares	2,852,419
Weighted Average Exercise Price, Shares Outstanding, Beginning Balance (in dollars per share) | $ / shares	$ 2.35
Number of Shares Granted (in shares) | shares	725,000
Weighted Average Exercise Price, Shares Granted (in dollars per share) | $ / shares	$ 1.82
Number of Shares Forfeited/expired (in shares) | shares	(226,250)
Weighted Average Exercise Price, Shares Forfeited/expired (in dollars per share) | $ / shares	$ 2.25
Number of Shares Outstanding, Ending Balance (in shares) | shares	3,351,169
Weighted Average Exercise Price, Shares Outstanding, Ending Balance (in dollars per share) | $ / shares	$ 2.24
Number of Shares Exercisable (in shares) | shares	2,780,311
Weighted Average Exercise Price, Shares Exercisable (in dollars per share) | $ / shares	$ 2.30