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Selected Quarterly Financial Data (Unaudited - in thousands except per share data) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (Unaudited - in thousands except per share data) | Selected Quarterly Financial Data (Unaudited — in thousands except per share data)
| Quarters Ended
| March 31 |  | June 30 |  | September 30 |  | December 31
2018 |  |  |  |  |  |  |
Net loss | $ | (49,916 | ) |  | $ | (61,833 | ) |  | $ | (159,163 | ) |  | $ | (78,083 | )
Basic and diluted net loss per common share (1) | $ | (0.28 | ) |  | $ | (0.33 | ) |  | $ | (0.84 | ) |  | $ | (0.43 | )
2017 |  |  |  |  |  |  |
Net loss | $ | (54,992 | ) |  | $ | (48,136 | ) |  | $ | (111,666 | ) |  | $ | (69,208 | )
Basic and diluted net loss per common share (1) | (0.39 | ) |  | (0.34 | ) |  | (0.69 | ) |  | (0.42 | )
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(1) | Per common share amounts for the quarters and full years have been calculated separately. Accordingly, quarterly amounts do not add to the annual amounts because of differences on the weighted-average common shares outstanding during each period principally due to the effect of the Company issuing shares of its common stock during the year.

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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