Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2019

Selected Quarterly Financial Data (Unaudited)

Selected Quarterly Financial Data (Unaudited)

21. Selected Quarterly Financial Data (Unaudited)

	Three Months Ended
	Dec. 31,		Sept. 30,		June 30,		Mar 31,		Dec. 31,		Sept. 30,		June 30,		Mar 31,
	2019		2019		2019		2019		2018		2018		2018		2018
Statements of Operations Data:
Revenue		2,256		829		650		492		504		498		648		340
Loss from operations		(21,401)		(23,144)		(21,599)		(19,658)		(17,283)		(14,816)		(13,564)		(13,455)
Net loss		(26,017)		(18,778)		(24,453)		(17,124)		(17,399)		(15,010)		(13,804)		(13,765)
Basic net loss per common share	$	(0.53)	$	(0.40)	$	(0.57)	$	(0.41)	$	(0.42)	$	(0.38)	$	(0.37)	$	(0.40)
Diluted net loss per common share	$	(0.53)	$	(0.45)	$	(0.57)	$	(0.45)	$	(0.42)	$	(0.38)	$	(0.37)	$	(0.40)