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Note 6 - Stockholders' Equity (Details) - Activity of Stock Option Plan (USD $)
6 Months Ended
Jun. 30, 2014
Activity of Stock Option Plan [Abstract]  
Outstanding at December 31, 2013 1,197,044
Outstanding at December 31, 2013 $ 3.79
Granted 7,500
Granted $ 0.29
Forfeited or expired (223,245)
Forfeited or expired $ 1.91
Outstanding at June 30, 2014 981,299
Outstanding at June 30, 2014 $ 4.19
Exercisable at June 30, 2014 624,793
Exercisable at June 30, 2014 $ 6.23