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Net Income (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Net Income (Loss) Per Share

Schedule of calculation of net income (loss) per share

Net income (loss) per share was calculated as follows for the periods indicated below:

​	​	​	​	​	​	​	​	​	​
​		Year Ended  December 31,
(in thousands, except per share data)		2021			2020			2019
Basic Net Income (Loss) Per Share	​	​	​	​	​	​	​	​	​
Basic net income (loss)	​	$	948,581	​	$	(295,697)	​	$	446,906
Weighted average common shares outstanding	​	​	220,428	​	​	218,073	​	​	214,913
​	​	​	​	​	​	​	​	​	​
Basic net income (loss) per share	​	$	4.30	​	$	(1.36)	​	$	2.08
​	​	​	​	​	​	​	​	​	​
Diluted Net Income (Loss) Per Share	​	​	​	​	​	​	​	​	​
Diluted net income (loss)	​	$	948,581	​	$	(295,697)	​	$	446,906
Weighted average common shares outstanding	​	​	220,428	​	​	218,073	​	​	214,913
​	​	​	​	​	​	​	​	​	​
Dilutive stock options and awards	​	​	1,646	​	​	—	​	​	2,744
​	​	​	​	​	​	​	​	​	​
Weighted average shares used to compute diluted net income (loss) per share	​	​	222,074	​	​	218,073	​	​	217,657
​	​	​	​	​	​	​	​	​	​
Diluted net income (loss) per share	​	$	4.27	​	$	(1.36)	​	$	2.05

Schedule of antidilutive securities excluded from the computation of earnings per share

The potential common shares that were excluded from the diluted net income (loss) per share computation are as follows:

​	​	​	​	​	​	​	​
​		2021		2020		2019
Outstanding stock options and awards		10,106,837		15,274,871		9,349,889
Common shares issuable upon conversion of the 1.25% Convertible Senior Notes due 2020		—		—		368,939
Total potential common shares excluded from diluted net income (loss) per share computation		10,106,837		15,274,871		9,718,828

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Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

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-Name Accounting Standards Codification
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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

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