Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Potential Shares of Common Stock Excluded from Diluted Net Loss Per Share (Details)

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Note 1 - Potential Shares of Common Stock Excluded from Diluted Net Loss Per Share (Details) - shares
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Restricted Stock [Member]        
Unvested restricted stock (in shares) 393,339 542,354 393,339 542,354
Employee Stock Option [Member]        
Unvested restricted stock (in shares) 524,600 266,555 524,600 266,555
Warrant [Member]        
Unvested restricted stock (in shares) 90,000 90,000