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Net income (loss) per share | 9 Months Ended
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Sep. 30, 2018
Net income (loss) per share |
Net income (loss) per share | 15. Net income (loss) per share Net income (loss) per share was calculated as follows for the periods indicated:
|  | Three Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |
(in thousands, except per share data) |  |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Basic Net Income (Loss) Per Share |  |  |  |  |  |  |  |  |  |  |  |  |
Basic net income (loss) |  | $ | 29,176 |  | $ | 36,054 |  | $ | 40,430 |  | $ | (163,513) |
Weighted average common shares outstanding |  |  | 212,627 |  |  | 206,796 |  |  | 212,172 |  |  | 202,399 |
Basic net income (loss) per share |  | $ | 0.14 |  | $ | 0.17 |  | $ | 0.19 |  | $ | (0.81) |
Diluted Net Income (Loss) Per Share |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted net income (loss) |  | $ | 29,176 |  | $ | 36,054 |  | $ | 40,430 |  | $ | (163,513) |
Weighted average common shares outstanding |  |  | 212,627 |  |  | 206,796 |  |  | 212,172 |  |  | 202,399 |
Dilutive stock options and RSUs |  |  | 3,337 |  |  | 5,814 |  |  | 3,344 |  |  | — |
Weighted average shares used to compute diluted net income (loss) per share |  |  | 215,964 |  |  | 212,610 |  |  | 215,516 |  |  | 202,399 |
Diluted net income (loss) per share |  | $ | 0.14 |  | $ | 0.17 |  | $ | 0.19 |  | $ | (0.81) |
The following potential common shares were excluded from the calculations as their effect would be anti-dilutive:
|  | Three Months Ended |  | Nine Months Ended |
|  | September 30, |  | September 30, |
|  | 2018 |  | 2017 |  | 2018 |  | 2017 |
Outstanding stock options and awards |  | 9,055,004 |  | 2,399,468 |  | 7,254,774 |  | 12,654,718 |
Common shares issuable upon conversion of the 2018 Notes |  | 148,741 |  | 149,527 |  | 148,741 |  | 149,527 |
Common shares issuable upon conversion of the 2020 Notes |  | 368,939 |  | 368,939 |  | 368,939 |  | 368,939 |
Total potential common shares excluded from diluted net loss per share computation |  | 9,572,684 |  | 2,917,934 |  | 7,772,454 |  | 13,173,184 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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