Note 7 - Income Taxes (Details) - Deferred Income Taxes (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Deferred tax assets:
Net operating loss carryforwards	$ 13,431	$ 14,491
Inventory	1,795	1,769
Other liabilities	3,569	3,055
Fixed assets and other capitalized assets	2,061	440
Other temporary differences	682	589
	21,538	20,344
Deferred tax valuation allowance	(21,229)	(20,344)
	$ 309