Note 10 - Income Taxes (Details) - Summary of net deferred income tax liability: (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Deferred tax assets:
Accrued employee compensation	$ 115	$ 107
Reserves	270	273
Other assets	17	17
Non-Qualified Stock Compensation	1,236	1,236
Net operating loss and credit carryforwards	38,824	32,628
	40,462	34,261
Deferred tax liabilities:
Property, plant and equipment	(14,024)	(12,255)
Prepaid expenses	(124)	(162)
	(14,148)	(12,417)
Total deferred taxes	26,314	21,844
Less: valuation allowance	(26,634)	(22,137)
Net deferred tax liability	(320)	(293)
Classification of deferred taxes:
Current deferred tax asset (included in other current assets)	168	180
Long-term deferred tax liability	$ (488)	$ (473)