Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Schedule of Stock Excluded from the Calculation of Net Income (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 March 31,
	2019	2018
Common stock options	2,316,993	1,458,774
Common stock warrants	11,005,602	11,395,851
Total	13,322,595	12,854,625