Note 10 - Income Taxes - Income Tax Reconciliation (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Income (Loss) Before Provision for (Recovery of) Income Taxes	$ 1,333,248	$ (122,377)	$ 8,376
Statutory rate	34.00%	34.00%	34.00%
	$ 453,304	$ (41,608)	$ 2,848
Permanent differences	1,000	900	1,200
Research and development and other credits - net	(47,400)	(48,500)	(46,300)
Valuation allowance	(3,681,100)	82,200	44,400
Other	(25,404)	7,008	(2,148)
	$ (3,299,600)