Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2020

Net Loss per Share

Computation of Basic and Diluted Net Loss Per Share

	Year Ended
	December 31,
	2020		2019
Basic and diluted net loss per share calculation:
Net loss, basic	$	(22,181,000)	$	(19,479,000)
Change in fair value of derivative liabilities, net of interest		—		(938,000)
Net loss, diluted		(22,181,000)		(20,417,000)
Weighted average shares outstanding, basic		16,415,012		7,827,197
Net loss per share, basic	$	(1.35)	$	(2.49)
Weighted average shares outstanding, diluted		16,415,012		8,009,909
Net loss per share, diluted	$	(1.35)	$	(2.55)

Antidilutive Securities Excluded from Computation of Diluted Weighted Shares Outstanding

	Year Ended
	December 31,
	2020	2019
Options	1,668,926	1,275,380
Restricted stock awards	322,756	343,493
Warrants	10,547,618	1,854,007
Total	12,539,300	3,472,880