Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Equity - Stock Options Activity (Details)

v3.7.0.1
Note 8 - Equity - Stock Options Activity (Details) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Granted at Market Price, Number of Shares (in shares) 190,286  
Employee Stock Option [Member]    
Outstanding, Number of Shares (in shares) 953,075  
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 3.66  
Outstanding, Weighted Average Exercise Price (in dollars per share) 3.78 $ 3.66
Outstanding, Weighted Average Fair Value (in dollars per share) $ 1.77 $ 1.86
Outstanding, Weighted Average Remaining Contractual Life (Year) 7 years 146 days 6 years 328 days
Exercisable, Number of Shares (in shares) 347,119  
Exercisable, Weighted Average Exercise Price (in dollars per share) $ 4.54  
Granted at Market Price, Number of Shares (in shares) 190,286  
Granted at Market Price, Weighted Average Exercise Price (in dollars per share) $ 3.69  
Exercised, Number of Shares (in shares) (69,581)  
Exercised, Weighted Average Exercise Price (in dollars per share) $ 1.20  
Cancelled, Number of Shares (in shares) (29,494)  
Cancelled, Weighted Average Exercise Price (in dollars per share) $ 5.25  
Outstanding, Number of Shares (in shares) 1,044,286 953,075
Exercisable, Weighted Average Fair Value (in dollars per share) $ 2.26  
Exercisable, Weighted Average Remaining Contractual Life (Year) 4 years 292 days