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Note 6 - Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 13 $ 51 $ 41 $ 177