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Net income (loss) per share | 6 Months Ended
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Jun. 30, 2018
Net income (loss) per share |
Net income (loss) per share | 14. Net income (loss) per share Net income (loss) per share was calculated as follows for the periods indicated:
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
(in thousands, except per share data) |  |  | 2018 |  | 2017 |  |  | 2018 |  | 2017 |
Basic Net Income (Loss) Per Share |  |  |  |  |  |  |  |  |  |  |  |  |
Basic net income (loss) |  | $ | 52,394 |  | $ | (12,484) |  | $ | 11,254 |  | $ | (199,567) |
Weighted average common shares outstanding |  |  | 212,210 |  |  | 205,141 |  |  | 211,945 |  |  | 200,200 |
Basic net income (loss) per share |  | $ | 0.25 |  | $ | (0.06) |  | $ | 0.05 |  | $ | (1.00) |
Diluted Net Income (Loss) Per Share |  |  |  |  |  |  |  |  |  |  |  |  |
Diluted net income (loss) |  | $ | 52,394 |  | $ | (12,484) |  | $ | 11,254 |  | $ | (199,567) |
Weighted average common shares outstanding |  |  | 212,210 |  |  | 205,141 |  |  | 211,945 |  |  | 200,200 |
Dilutive stock options and RSUs |  |  | 2,893 |  |  | — |  |  | 3,349 |  |  | — |
Weighted average shares used to compute diluted net income (loss) per share |  |  | 215,103 |  |  | 205,141 |  |  | 215,294 |  |  | 200,200 |
Diluted net income (loss) per share |  | $ | 0.24 |  | $ | (0.06) |  | $ | 0.05 |  | $ | (1.00) |
The following potential common shares were excluded from the calculations as their effect would be anti-dilutive:
|  | Three Months Ended |  | Six Months Ended |
|  | June 30, |  | June 30, |
|  | 2018 |  | 2017 |  | 2018 |  | 2017 |
Outstanding stock options and awards |  | 8,079,446 |  | 12,085,346 |  | 6,732,551 |  | 12,085,346 |
Common shares issuable upon conversion of the 2018 Notes |  | 148,817 |  | 149,603 |  | 148,817 |  | 149,603 |
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 |  | 8,597,202 |  | 12,603,888 |  | 7,250,307 |  | 12,603,888 |

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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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