Note 7 - Basic and Diluted Earnings Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net income attributable to common shareholders	$ 316,086	$ 637,134	$ 485,710	$ 1,287,312
Basic (in shares)	10,134,235	10,073,121	10,098,564	10,055,390
Effect of dilutive securities:
Stock options (in shares)	1,372		4,490
Diluted weighted average shares (in shares)	10,135,607	10,073,121	10,103,054	10,055,390
Earnings per common share:
Basic (in dollars per share)	$ 0.03	$ 0.06	$ 0.05	$ 0.13
Diluted (in dollars per share)	$ 0.03	$ 0.06	$ 0.05	$ 0.13