INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Deferred tax assets
Net operating loss carryforwards	$ 27,309	$ 26,067
Tax credit carryforwards	1,246	1,246
Stock option compensation expense	9,666	8,047
Book accruals	5,604	4,859
Deferred tax assets	43,825	40,219
Deferred tax liabilities
Difference in book and tax basis of equipment	(2,500)	(2,101)
Deferred tax liabilities	(2,500)	(2,101)
Net deferred tax assets (liabilities) before valuation allowance	41,325	38,118
Valuation allowance	(41,810)	(38,439)
Deferred income tax assets (liabilities) net	(485)	(321)
Net current deferred tax assets	0	0
Net noncurrent deferred tax liabilities	$ (485)	$ (321)