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Note 6 - Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of Intangible Assets $ 14 $ 63 $ 28 $ 127