Note 10 - Income Taxes (Tables)

12 Months Ended

Sep. 30, 2013

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

Years Ended September 30,	2013			2012
Current tax (benefit) expense
Federal	$	-		$	(155,000	)
State		2,000			4,000
		2,000			(151,000	)
Deferred (benefit) expense
Federal		(779,000	)		(1,583,000	)
State		(138,000	)		(279,000	)
		(917,000	)		(1,862,000	)
Change in valuation allowance		917,000			1,862,000
Provision for income taxes	$	2,000		$	(151,000	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

Years Ended September 30,	2013			2012
Income taxes computed at the federal statutory rate	$	430,000		$	446,000
Change in valuation allowance		(917,000	)		(1,862,000	)
Nondeductible compensation, interest expense and other		8,000			6,000
State income taxes, net of federal tax benefit		70,000			72,000
Change in R&D credit carryover		(56,000	)		53,000
Stock options and other prior year true-ups		462,000			1,389,000
State business credit utilization		(4,000	)		(100,000	)
Prior year tax adjustments		9,000			(155,000	)
	$	2,000		$	(151,000	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	At September 30,
Deferred tax assets:	2013			2012
Net operating loss carryforwards	$	19,576,000		$	20,350,000
Research and development credit		2,257,000			2,206,000
Share-based compensation		526,000			600,000
Equipment		(18,000	)		-
Patents		230,000			229,000
Accruals and other		463,000			509,000
State tax deduction		(2,000	)		(2,000	)
Federal AMT Credit		49,000			49,000
Allowances		127,000			184,000
Gross deferred tax asset		23,208,000			24,125,000
Less valuation allowance		(23,208,000	)		(24,125,000	)
	$	-		$	-