The following table sets forth the computation of basic and diluted loss per common share (in thousands, except per share data):


	Three Months Ended
	March 31,
Basic loss per common share	2021		2020
Net loss	$	(3,138)	$	(6,665)
Net loss allocated to participating securities		23		43
Net loss allocated to common shareholders	$	(3,115)	$	(6,622)

Basic weighted-average common shares outstanding		38,738		37,390
Basic loss per common share	$	(0.08)	$	(0.18)

	Three Months Ended
	March 31,
Diluted loss per common share	2021		2020
Net loss	$	(3,138)	$	(6,665)
Net loss allocated to participating securities		23		43
Net loss allocated to common shareholders	$	(3,115)	$	(6,622)

Basic weighted-average common shares outstanding		38,738		37,390
Effect of dilutive stock options and awards		--		--
Diluted weighted-average common shares outstanding		38,738		37,390
Diluted loss per common share	$	(0.08)	$	(0.18)

We excluded stock options from the calculation of diluted weighted-average common shares outstanding if the per share value, including the sum of (i) the exercise price of the options and (ii) the amount of the compensation cost attributed to future services and not yet recognized, was greater than the average market price of the shares because the inclusion of these stock options would be antidilutive to loss per common share. Accordingly, for the three months ended March 31, 2021 and 2020 all stock options and awards were excluded from the calculation of diluted weighted-average common shares outstanding as these would be antidilutive due to the net loss.