Note 2 - Significant Accounting Policies (Details) - Net Sales to Unaffiliated Customers (by origin) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 1,274	$ 1,080
South America [Member]
Segment Reporting Information [Line Items]
Net sales	96	312
North America [Member]
Segment Reporting Information [Line Items]
Net sales	31	35
Europe [Member]
Segment Reporting Information [Line Items]
Net sales	1,040	588
Other Geographic Area [Member]
Segment Reporting Information [Line Items]
Net sales	$ 107	$ 145