Note 10 - Income Taxes - Reconciliation of Income Taxes (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income taxes computed at the federal statutory rate	$ (499,000)	$ 456,000
Change in valuation allowance	(66,000)	(8,316,000)
Expired net operating loss carryforwards	487,000	598,000
Nondeductible compensation, interest expense and other	99,000	20,000
State income taxes, net of federal tax benefit	(36,000)	24,000
Change in R&D credit carryover	(98,000)	(17,000)
Stock options and other prior year true-ups	(75,000)	(1,103,000)
Other	1,840	(8,700)
Provision for income taxes	$ (186,160)	$ (8,346,666)