Note 11 - Segments and Geographic Information (Details) - Summary of Geographic Sales (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Note 11 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	$ 7,890	$ 4,827	$ 19,508	$ 14,938
UNITED STATES
Note 11 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	7,517	4,213	17,390	12,983
International [Member]
Note 11 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]
Net Sales	$ 373	$ 614	$ 2,118	$ 1,955