(Loss) Earnings per Share

12 Months Ended

Dec. 31, 2023

6. (Loss) Earnings per Share

Basic and diluted (loss) earnings per share are calculated as follows (in 000s):


	Years Ended December 31,
	2023			2022			2021
Numerator:
Net (loss) income	$	(209,360	)	$	(149,338	)	$	24,926
Net (loss) income attributable to common stockholders	$	(209,360	)	$	(149,338	)	$	24,926
Denominator:
Weighted-average common shares outstanding		70,371			60,761			52,065
Effective of Dilutive Securities
Options to purchase common stock		—			—			1,429
Non - vested restricted stock units (RSUs)		—			—			118
ESPP to purchase common stock		—			—			11
Dilutive potential common shares		—			-			1,558
Shares used in calculating diluted (loss) earnings per share		70,371			60,761			53,623

The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares outstanding because such securities have an antidilutive impact due to losses reported (in common stock equivalent shares, in 000s):


	December 31,
	2023		2022		2021
Options to purchase common		10,685		7,982		—
Non-vested RSUs		309		131		—
ESPP to purchase common stock		35		17		—

For additional information related to the Company's common stock see Note 12, Common Stock to these consolidated financial statements.