Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Schedule of Potentially Dilutive Securities not included in the Calculation of Diluted Net Loss per Share

The following table presents the weighted-average number of common share equivalents, calculated using the treasury stock method, not included in the calculation of diluted net loss per share due to the anti-dilutive effect of the securities:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2019	2018	2019	2018
Common stock options	2,487,135	2,215,086	2,398,467	1,835,879
Common stock warrants	9,826,743	11,817,700	10,412,385	11,568,961
Total	12,313,878	14,032,786	12,810,852	13,404,840