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Note 15 - Segments and Geographic Information (Details) - Summary of Geographic Sales (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Note 15 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]      
Net Sales $ 21,533 $ 23,375 $ 20,453
UNITED STATES
     
Note 15 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]      
Net Sales 19,136 20,363 16,435
International [Member]
     
Note 15 - Segments and Geographic Information (Details) - Summary of Geographic Sales [Line Items]      
Net Sales $ 2,397 $ 3,012 $ 4,018