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
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Employee Stock Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) 3,352,783 2,294,534
Common Stock Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) 2,864,823
Rights to Shares [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares) 956,354