Note 12 - Income Taxes (Details) - Deferred Tax Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets
Allowance for doubtful accounts	$ 6	$ 6
Inventory reserve	115	45
Other	161	151
Total Current Assets	282	202
Long Term Assets (Liabilities)
Property, plant and equipment	209	203
Deferred royalty payments	5	10
Tax operating loss carry forwards	10,672	11,101
Tax credit carry forwards	217	225
Non-employee stock options	685	625
Other	(8)	(8)
Total Long Term Assets (Liabilities)	11,780	12,156
Gross Deferred Tax Asset (Liability)	12,062	12,358
Less: valuation allowance	$ (12,062)	$ (12,358)