Basis of Presentation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Antidilutive shares excluded from earnings per share

Diluted net loss per common share for the periods presented do not reflect the following potential common shares, as the effect would be antidilutive:

	September 30,
	2018	2017
Stock options	6,138,373	4,583,148
Common stock warrants	1,866,831	1,890,489
Employee stock purchase plan	18,507	—
Convertible preferred stock	—	25,068,556
Total	8,023,711	31,542,193