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Net Income (Loss) Per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Summary of Net Income (Loss) Per Share | The following table summarizes the computation of basic and diluted net loss per common share.
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Numerator: |  |  |  |  |  |  |  |
Loss from continuing operations |  | $ | (5,391) |  |  | $ | (17,566) |  |  | $ | (10,304) |  |  | $ | (125,643) |
Less: Preferred stock cumulative dividends and deemed dividends |  | (2,211) |  |  | (3,043) |  |  | (16,740) |  |  | (5,994) |
Numerator for basic and diluted loss from continuing operations per common share (1) |  | (7,602) |  |  | (20,609) |  |  | (27,044) |  |  | (131,637) |
Loss from discontinued operations, net of tax (Note 2) |  | — |  |  | (4,182) |  |  | — |  |  | (144,296) |
Numerator for basic and diluted undistributed net loss per common share (1) |  | $ | (7,602) |  |  | $ | (24,791) |  |  | $ | (27,044) |  |  | $ | (275,933) |
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares outstanding |  | 43,067 |  |  | 42,753 |  |  | 42,952 |  |  | 42,671 |
Adjustment for unvested restricted common stock |  | (524) |  |  | (556) |  |  | (450) |  |  | (517) |
Adjustment for 2021 Warrants outstanding (2) |  | 1,897 |  |  | — |  |  | 1,059 |  |  | — |
Shares used to calculate income (loss) per share, basic and diluted |  | 44,440 |  |  | 42,197 |  |  | 43,561 |  |  | 42,154 |
Per common share net loss: |  |  |  |  |  |  |  |
Basic loss from continuing operations per common share |  | $ | (0.17) |  |  | $ | (0.49) |  |  | $ | (0.62) |  |  | $ | (3.12) |
Basic loss from discontinued operations per common share |  | — |  |  | (0.10) |  |  | — |  |  | (3.43) |
Basic net loss per common share |  | $ | (0.17) |  |  | $ | (0.59) |  |  | $ | (0.62) |  |  | $ | (6.55) |
Diluted loss from continuing operations per common share |  | $ | (0.17) |  |  | $ | (0.49) |  |  | $ | (0.62) |  |  | $ | (3.12) |
Diluted loss from discontinued operations per common share |  | — |  |  | (0.10) |  |  | — |  |  | (3.43) |
Diluted net loss per common share |  | $ | (0.17) |  |  | $ | (0.59) |  |  | $ | (0.62) |  |  | $ | (6.55) |
Cash dividends declared per common share |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
_______________________________ (1) Preferred Stock does not participate in losses. (2) Weighted average 2021 Warrants outstanding are included in shares outstanding for calculation of basic earnings per share because they are exercisable at an exercise price of $0.01 per share, subject to certain adjustments (see Note 17).
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share | The following table presents securities that could be potentially dilutive in the future that were excluded from the calculation of diluted net loss per common share because they had an anti-dilutive effect.
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Options |  | 825 |  |  | 890 |  |  | 843 |  |  | 890 |
2019 Warrants |  | 1,500 |  |  | 1,500 |  |  | 1,500 |  |  | 1,500 |
Series B Preferred Stock, as-converted |  | — |  |  | 25,278 |  |  | — |  |  | 25,278 |
|  | 2,325 |  |  | 27,668 |  |  | 2,343 |  |  | 27,668 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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