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Loss Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Schedule of Loss Per Share, Basic and Diluted | The following table summarizes the basic and diluted loss per share calculations (in thousands, except per share amounts):
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Numerator |  |  |  |  |
Net loss | $ | (90,733 | ) |  | $ | (159,457 | ) |  | $ | (156,079 | )
Less: Net loss attributable to noncontrolling interest | — |  |  | — |  |  | 20,741 |
Less: Preferred stock dividends | — |  |  | — |  |  | (1 | )
Net loss available to common shareholders | $ | (90,733 | ) |  | $ | (159,457 | ) |  | $ | (135,339 | )
Denominator |  |  |  |  |
Basic and diluted weighted average common shares (1) | 223,999 |  |  | 222,940 |  |  | 176,584 |
Loss per common share: |  |  |  |  |
Basic and diluted | $ | (0.41 | ) |  | $ | (0.72 | ) |  | $ | (0.77 | )
(1) | Approximate number of shares of potentially convertible preferred stock to common stock up until the time of conversion on August 26, 2016, unvested restricted stock units and stock to be issued pursuant to the ESPP have been excluded from the computation of diluted loss per share as the effect would be anti-dilutive when the results from operations are at a net loss. | 922 |  |  | 648 |  |  | 35,556 |

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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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