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Loss per common share (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Summary of computation of basic and diluted loss per common share | The following table sets forth the computation of basic and diluted loss per common share for the periods presented (in thousands, except per share amounts):
|  | 2021 |  |  | 2020 |  |  | 2019 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (172,415 | ) |  | $ | (183,524 | ) |  | $ | (176,145 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares for basic loss per common share |  |  | 397,992 |  |  |  | 275,649 |  |  |  | 246,353 |
Effect of dilutive securities |  |  | — |  |  |  | — |  |  |  | — |
Weighted average common shares for diluted loss per common share |  |  | 397,992 |  |  |  | 275,649 |  |  |  | 246,353 |
Loss per common share, basic and diluted |  | $ | (0.43 | ) |  | $ | (0.67 | ) |  | $ | (0.72 | )
Schedule of antidilutive securities excluded from computation of earnings per share | The following table sets forth the outstanding securities as of the periods presented which were not included in the calculation of diluted earnings per common share during 2021, 2020 and 2019 (in thousands):
|  | As of December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Stock options |  |  | 17,655 |  |  |  | 23,782 |  |  |  | 25,030 |
RSUs |  |  | 13,584 |  |  |  | 7,061 |  |  |  | 1,240 |
PSUs |  |  | 8,203 |  |  |  | 2,404 |  |  |  | — |
Warrants |  |  | 5,127 |  |  |  | 6,535 |  |  |  | 1,833 |
|  |  | 44,569 |  |  |  | 39,782 |  |  |  | 28,103 |

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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=124432515&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=124432515&loc=d3e3550-109257 + Details
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