The following is a reconciliation of basic and diluted net loss per share attributable to common stockholders:


	Year Ended December 31,
	2022		2021		2020
Net income (loss)	$	1,258	$	(16,260)	$	(32,944)
Less: Earnings allocated to participating securities	23		—		—
Net income (loss) available to common shareholders	$	1,235	$	(16,260)	$	(32,944)

Denominator for basic and diluted net income (loss) per share
Weighted average shares outstanding for basic	20,704,556		19,268,255		18,056,828
Weighted average shares outstanding for diluted	20,947,727		19,268,255		18,056,828

Earnings (loss) per share:
Basic	0.06		(0.84)		(1.82)
Diluted	$	0.06	$	(0.84)	$	(1.82)

Our basic and diluted net income (loss) per share is computed using the two-class method. The two-class method is an earnings allocation that determines net income per share for each class of common stock and participating securities according to their participation rights in dividends and undistributed earnings or losses. Non-vested restricted stock that includes non-forfeitable rights to dividends are considered participating securities.

For the periods presented with a net loss the weighted average shares outstanding remains consistent between basic and diluted as the effect would have been anti-dilutive.

The following table shows the contingently issuable and convertible equity shares that were excluded from the calculation of diluted net earnings (loss) per share because their effect would have been anti-dilutive:


	Year Ended December 31,
	2022	2021	2020


Restricted stock	413,404	368,446	436,730
Stock options	3,556	6,638	12,802

	416,960	375,084	449,532