Computation of Net Loss per Share of Common Stock (Notes)

12 Months Ended

Dec. 31, 2020

Earnings Per Share, Basic [Abstract]

Computation of Net Loss per Share of Common Stock

Computation of Net Loss Per Share of Common Stock

The following table identifies the components of net loss per basic and diluted share (in thousands, except for per share data):

	Year Ended December 31,
	2020		2019		2018
Net loss per share – basic
Net loss	$	(9,200)	$	(6,443)	$	(3,617)
Weighted average shares outstanding – basic	13,612		10,395		9,499
Net loss per share – basic	$	(0.68)	$	(0.62)	$	(0.38)
Net loss per share – diluted
Loss attributable to common shareholders:
Net loss	$	(9,200)	$	(6,443)	$	(3,617)
Numerator effect of dilutive securities
Warrants	(294)		(105)		(161)
Loss attributable to common shareholders	$	(9,494)	$	(6,548)	$	(3,778)
Weighted averages shares outstanding – diluted:
Weighted average shares outstanding – basic	13,612		10,395		9,499
Denominator effect of dilutive securities
Warrants	15		19		107
Weighted average shares outstanding – diluted	13,627		10,414		9,606
Net loss per share – diluted	$	(0.70)	$	(0.63)	$	(0.39)

Stock options, warrants and restricted stock units to acquire common shares excluded from the computation of diluted weighted-average common shares as their effect is anti-dilutive were as follows (in thousands):

	Year Ended December 31,
	2020	2019	2018
Stock options	1,150	1,299	1,273
Warrants	414	1,025	348
Restricted stock units	284	124	150
Total anti-dilutive	1,848	2,448	1,771