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Net Loss Per Share (Tables) | 12 Months Ended
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Dec. 31, 2019
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings Per Share |
|  | December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Basic and diluted net loss per share (in thousands, except per share amounts): |  |  |  |  |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss |  | $ | (152,600 | ) |  | $ | (158,899 | ) |  | $ | (95,154 | )
Preferred stock deemed dividend |  |  | (3,267 | ) |  |  | - |  |  |  | - |
Net loss allocable to common stockholders |  | $ | (155,867 | ) |  | $ | (158,899 | ) |  | $ | (95,154 | )
Denominator for basic and diluted net loss per share allocable to common stockholders: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average common shares outstanding |  |  | 72,024 |  |  |  | 62,362 |  |  |  | 52,613 |
Basic and diluted net loss per share allocable to common stockholders |  | $ | (2.16 | ) |  | $ | (2.55 | ) |  | $ | (1.81 | )
Outstanding Stock Options and Stock Awards Excluded from Calculation of Net Loss Per Share |
|  | December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Outstanding securities not included in diluted net loss per share calculation (in thousands): |  |  |  |  |  |  |  |  |  |  |  |
Stock options and stock awards |  |  | 9,789 |  |  |  | 7,344 |  |  |  | 5,981 |
Series B Convertible Preferred Stock (as converted to common stock) |  |  | 4,840 |  |  |  | - |  |  |  | - |
Warrants |  |  | 5,841 |  |  |  | - |  |  |  | - |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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