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Note 18 - Summary of Option Activity (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Outstanding at January 1, 2015 (in shares) 1,056,000  
Outstanding at January 1, 2015 (in dollars per share) $ 3.72  
Granted (in shares) 260,500  
Granted (in dollars per share) $ 2.05  
Exercised (in shares) 0 201,589
Exercised (in dollars per share) $ 0  
Forfeited (in shares) (62,000)  
Forfeited (in dollars per share) $ 3.09  
Expired (in shares) (32,500)  
Expired (in dollars per share) $ 4.27  
Outstanding at December 31, 2015 (in shares) 1,222,000 1,056,000
Outstanding at December 31, 2015 (in dollars per share) $ 3.38 $ 3.72
Outstanding at December 31, 2015 2 years 120 days  
Outstanding at December 31, 2015 $ 0  
Exercisable at December 31, 2015 (in shares) 473,500  
Exercisable at December 31, 2015 (in dollars per share) $ 4.09  
Exercisable at December 31, 2015 288 days  
Exercisable at December 31, 2015 $ 0