7. INCOME TAXES Net deferred tax asset (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015
Income Taxes Net Deferred Tax Asset Details
Net operating loss carryforwards	$ 64,366,000	$ 61,363,000
R&D credit	1,221,000	1,221,000
Stock-based compensation	6,379,000	5,855,000
Capitalized R&D	18,508,000	15,082,000
Vacation and other	179,000	114,000
Loan modification	0	57,000
Total deferred tax assets	90,653,000	83,692,000
Fixed assets and intangibles	(49,000)	(86,000)
Total deferred tax liabilities	(49,000)	(86,000)
Valuation allowance	(90,604,000)	(83,606,000)
Net deferred tax asset	$ 0	$ 0