Note 10 - Income Taxes (Tables)

12 Months Ended

Sep. 30, 2015

Notes Tables

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

	Years ended September 30,
	2015			2014
Current tax benefit
Federal	$	-		$	-
State		(7,700	)		16,000
Total current tax benefit		(7,700	)		16,000
Deferred benefit
Federal		(7,564,000	)		(2,309,000	)
State		(775,000	)		(408,000	)
Total deferred benefit		(8,339,000	)		(2,717,000	)
Change in valuation allowance		-			2,717,000
Provision for income taxes	$	(8,346,700	)	$	16,000

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

	Years ended September 30,
	2015			2014
Income taxes computed at the federal statutory rate	$	456,000		$	1,137,000
Change in valuation allowance		(8,316,000	)		(2,717,000	)
Expired net operating loss carryforwards		598,000			1,285,000
Nondeductible compensation, interest expense and other		20,000			8,000
State income taxes, net of federal tax benefit		24,000			102,000
Change in R&D credit carryover		(17,000	)		79,000
Stock options and other prior year true-ups		(1,103,000	)		105,000
Other		(8,700	)		17,000
Provision for income taxes	$	(8,346,700	)	$	16,000

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

	At September 30,
	2015			2014
Deferred tax assets:
Net operating loss carryforwards	$	16,966,000		$	16,920,000
Research and development credit		2,309,000			2,182,000
Share-based compensation		468,000			414,000
Equipment		(24,000	)		(6,000	)
Patents		134,000			174,000
Accruals and other		465,000			630,000
State tax deduction		(6,000	)		(3,000	)
Federal AMT Credit		52,000			49,000
Allowances		150,000			131,000
Gross deferred tax asset		20,514,000			20,491,000
Less valuation allowance		(12,175,000	)		(20,491,000	)
Total deferred tax assets, net of valuation allowance	$	8,339,000		$	-