Loss per Share

9 Months Ended

Sep. 30, 2021

Loss per Share

Loss per Share

3.    Loss per Share

Earnings per common share is presented under two formats: basic earnings per common share and diluted earnings per common share. Basic earnings per common share is computed by dividing net income attributable to common shareholders by the weighted average number of common shares outstanding during the period. Diluted earnings per common share is computed by dividing net income by the weighted average number of common shares outstanding during the period, plus the potentially dilutive impact of common stock equivalents (i.e. stock options and warrants). Dilutive common share equivalents consist of the incremental common shares issuable upon exercise of stock options and warrants. The following table sets forth the computation of basic and diluted net loss per share:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Numerator:
Net loss	$	(4,185)	$	(6,200)	$	(12,919)	$	(14,871)
Denominator:
Weighted-average common shares, basic		26,007		25,598		26,004		22,969
Dilutive effect of stock options		—		—		—		—
Dilutive effect of warrants		—		—		—		—
Incremental dilutive shares		—		—		—		—
Weighted-average common shares, diluted		26,007		25,598		26,004		22,969
Net loss per share, basic and diluted	$	(0.16)	$	(0.24)	$	(0.50)	$	(0.64)

The following outstanding options and warrants were excluded from the computation of basic and diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2021	2020	2021	2020
Options to purchase common shares	3,653	3,095	3,653	3,095
Warrants to purchase common shares	39	39	39	39