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Selected Quarterly Financial Data (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information | The table below sets forth certain unaudited statements of comprehensive income (loss) data, and net income (loss) per common share data, for each quarter of 2019 and 2018: (in thousands, except per share data)
| Quarter Ended |  |  |  |  |  |
| March 31 |  | June 30 |  | September 30 |  | December 31
|  |  | (Unaudited) |  |  |  |
2019 |  |  |  |  |  |  |
Revenues (1) | $ | 9,216 |  |  | $ | 9,682 |  |  | $ | 294,448 |  |  | $ | 8,727 |
Income (loss) from operations | $ | (17,469) |  |  | $ | (18,545) |  |  | $ | 224,676 |  |  | $ | (47,217) |
Net income (loss) | $ | (21,797) |  |  | $ | (23,018) |  |  | $ | 226,086 |  |  | $ | (51,138) |
Net income (loss) per common share, basic | $ | (0.21) |  |  | $ | (0.22) |  |  | $ | 2.13 |  |  | $ | (0.48) |
Net income (loss) per common share, diluted | $ | (0.21) |  |  | $ | (0.22) |  |  | $ | 1.95 |  |  | (0.48) |
Shares used in computing net income (loss) per common share, basic | 106,054 |  |  | 106,272 |  |  | 106,272 |  |  | 106,272 |
Shares used in computing net income (loss) per common share, diluted | 106,054 |  |  | 106,272 |  |  | 116,640 |  |  | 106,272 |
2018 |  |  |  |  |  |  |
Revenues | $ | 25,374 |  |  | $ | 13,798 |  |  | $ | 6,966 |  |  | $ | 17,071 |
Loss from operations | $ | (37,713) |  |  | $ | (30,272) |  |  | $ | (22,927) |  |  | $ | (12,367) |
Net loss | $ | (41,821) |  |  | $ | (34,549) |  |  | $ | (27,396) |  |  | $ | (16,782) |
Net loss per common share, basic and diluted | $ | (0.40) |  |  | $ | (0.33) |  |  | $ | (0.26) |  |  | $ | (0.16) |
Shares used in computing net loss per common share, basic and diluted | 105,668 |  |  | 105,848 |  |  | 105,881 |  |  | 105,920 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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