Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Summary of Significant Accounting Policies - Antidilutive Securities (Details)

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Note 2 - Summary of Significant Accounting Policies - Antidilutive Securities (Details) - shares
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Employee Stock Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) 1,126,287 375,752
Common Stock Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) 506,379 358,119
Restricted Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) 39,494