Summary of Significant Accounting Polices (Tables)

12 Months Ended

Dec. 31, 2015

Summary of Significant Accounting Polices

Schedule of potentially dilutive securities excluded from calculation of diluted net loss per share

        The following table sets forth the outstanding potentially dilutive securities that have been excluded from the calculation of diluted net loss per share because to do so would be anti-dilutive (in common equivalent shares):

	Year Ended December 31,
	2015		2014		2013
Convertible preferred stock		—		—		6,292,369
Convertible preferred stock warrants		—		—		205,020
Common stock warrants		242,779		62,505		—
Common stock options		2,165,065		1,817,548		1,163,621
Total		2,407,844		1,880,053		7,661,010