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Net Income (Loss) Per Share Attributable to Common Shareholders (Tables) | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Schedule of Computation of Basic and Diluted Net Income (Loss) per Share | The following table sets forth the computation of basic and diluted net income (loss) per share for the periods ended (in thousands, except per share amounts):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Net income (loss) |  | $ | (92,439 | ) |  | $ | 138,423 |  |  | $ | (241,826 | ) |  | $ | 36,316 |
Basic weighted-average common shares outstanding |  |  | 70,143,481 |  |  |  | 54,829,057 |  |  |  | 64,159,224 |  |  |  | 53,380,123 |
Effect of potentially dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding options |  |  | — |  |  |  | 2,612,354 |  |  |  | — |  |  |  | 2,326,824 |
Unvested restricted common shares |  |  | — |  |  |  | 157,490 |  |  |  | — |  |  |  | 114,473 |
Employee stock purchase plan |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Diluted weighted-average common shares outstanding |  |  | 70,143,481 |  |  |  | 57,598,901 |  |  |  | 64,159,224 |  |  |  | 55,821,420 |
Basic net income (loss) per common share |  |  | (1.32 | ) |  |  | 2.52 |  |  |  | (3.77 | ) |  |  | 0.68 |
Diluted net income (loss) per common share |  |  | (1.32 | ) |  |  | 2.40 |  |  |  | (3.77 | ) |  |  | 0.65 |
Schedule of Antidilutive Securities not Include in Computation of Net Income (Loss) per Share | The following common stock equivalents were excluded from the calculation of diluted net loss per share for the periods indicated because including them would have had an anti-dilutive effect (in thousands):
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Outstanding options |  |  | 7,932,906 |  |  |  | 3,791,475 |  |  |  | 7,932,906 |  |  |  | 3,911,071 |
Unvested restricted common shares |  |  | 897,510 |  |  |  | 13,750 |  |  |  | 897,510 |  |  |  | 34,250 |
ESPP |  |  | 11,808 |  |  |  | — |  |  |  | 11,808 |  |  |  | — |
Total |  |  | 8,842,224 |  |  |  | 3,805,225 |  |  |  | 8,842,224 |  |  |  | 3,945,321 |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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