Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	$ 6,699	$ 5,653	$ 11,618	$ 10,111
UNITED STATES
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	5,590	4,885	9,873	8,770
International [Member]
Note 10 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	$ 1,109	$ 768	$ 1,745	$ 1,341