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Income (Loss) per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Income (Loss) per Share | Income (Loss) per Share Basic income (loss) per share is computed by dividing net income (loss) attributable to common stockholders by the sum of the weighted-average number of common shares outstanding and the weighted-average number of shares issuable under the common stock warrants, representing 249 thousand shares during the three months ended March 31, 2020. The common stock warrants are included in the calculation of basic income (loss) per share for the three months ended March 31, 2020 because they were issuable for minimal consideration. As of March 31, 2020, the previously outstanding common stock warrants had been exercised for common stock and no warrants were outstanding. The following table sets forth the computation of basic and diluted income (loss) per share (in thousands, except per share amounts):
| Three Months Ended March 31, |  |
| 2021 |  | 2020 |  |  |  |
Net Loss | $ | (62,227) |  |  | $ | (222,337) |  |  |  |  |
Less: Undistributed income allocated to participating securities | — |  |  | — |  |  |  |  |
Net loss attributable to common stockholders | (62,227) |  |  | (222,337) |  |  |  |  |
Plus: Net income effect of convertible securities | — |  |  | — |  |  |  |  |
Numerator for diluted loss per common share | $ | (62,227) |  |  | $ | (222,337) |  |  |  |  |
Basic weighted-average common stock shares outstanding | 54,280 |  |  | 53,153 |  |  |  |  |
Plus: dilutive effects of common stock equivalents | — |  |  | — |  |  |  |  |
Diluted weighted-average common stock shares outstanding | 54,280 |  |  | 53,153 |  |  |  |  |
Basic loss per common share | $ | (1.15) |  |  | $ | (4.18) |  |  |  |  |
Diluted loss per common share | $ | (1.15) |  |  | $ | (4.18) |  |  |  |  |
Diluted income (loss) per common share excludes the following equity instruments because their effect would be anti-dilutive: |  |  |  |  |  |  |
Shares of unvested restricted stock | 674 |  |  | 437 |  |  |  |  |
Shares of stock options | 2,086 |  |  | 1,939 |  |  |  |  |
Common stock equivalents using the if-converted method of settling the 5.00% Convertible Senior Notes | 2,704 |  |  | 2,704 |  |  |  |  |

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