Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Common Stock Equivalents Excluded from Computation of Diluted Net Loss Per Share of Common Stock

The following common stock equivalents were excluded from the computation of diluted net loss per common share of common stock for the years ended December 31, 2018 and 2017 because including them would have been antidilutive (in thousands):

	Year Ended December 31,
	2018		2017
Stock options		3,578		1,125
Warrants		4,035		2,779