Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	$ 5,988	$ 7,904	$ 18,702	$ 20,878
United States [Member]
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	5,348	6,976	16,683	18,700
International [Member]
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	$ 640	$ 928	$ 2,019	$ 2,178