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Net Income (Loss) Per Share | 12 Months Ended
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Dec. 31, 2020
Net Income (Loss) Per Share |
Net Income (Loss) Per Share | Note 14. 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 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 all periods presented 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) |  | 2020 |  | 2019 |  | 2018
Basic Net Income (Loss) Per Share | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income (loss) | ​ | $ | (295,697) | ​ | $ | 446,906 | ​ | $ | 109,493
Weighted average common shares outstanding | ​ | ​ | 218,073 | ​ | ​ | 214,913 | ​ | ​ | 212,383
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income (loss) per share | ​ | $ | (1.36) | ​ | $ | 2.08 | ​ | $ | 0.52
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted Net Income (Loss) Per Share | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income (loss) | ​ | $ | (295,697) | ​ | $ | 446,906 | ​ | $ | 109,493
Weighted average common shares outstanding | ​ | ​ | 218,073 | ​ | ​ | 214,913 | ​ | ​ | 212,383
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Dilutive stock options and awards | ​ | ​ | — | ​ | ​ | 2,744 | ​ | ​ | 3,252
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares used to compute diluted net income (loss) per share | ​ | ​ | 218,073 | ​ | ​ | 217,657 | ​ | ​ | 215,635
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income (loss) per share | ​ | $ | (1.36) | ​ | $ | 2.05 | ​ | $ | 0.51
​ The following potential common shares were excluded from the calculation as their effect would be anti-dilutive:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2020 |  | 2019 |  | 2018 |
Outstanding stock options and awards |  | 15,274,871 |  | 9,349,889 |  | 8,255,992 |
Common shares issuable upon conversion of the 2020 Notes |  | — |  | 368,939 |  | 368,939 |
Total potential common shares excluded from diluted net income (loss) per share computation |  | 15,274,871 |  | 9,718,828 |  | 8,624,931 |
​

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