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Net Income (Loss) Per Share | 12 Months Ended
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Dec. 31, 2021
Net Income (Loss) Per Share |
Net Income (Loss) Per Share | Note 13. Net Income (Loss) Per Share Our basic net income (loss) per share is computed by dividing the net income (loss) by the number of weighted average common shares outstanding during the period. Our diluted net income (loss) per share is computed by dividing net income (loss) by the weighted average common shares outstanding during the period assuming potentially dilutive common shares of stock options, RSUs, PSUs and common shares issuable upon conversion of the 1.25% convertible senior notes that matured in November 2020 (the “2020 Notes”) using the if-converted method. Common shares issuable upon conversion of the 2020 Notes were excluded from the diluted net income (loss) per share computation for 2019 as their share effect was anti-dilutive. 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
​ 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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