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Income (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Summary of Shares Equivalents Excluded from Dilutive Share Computation | The following share equivalents have been excluded from the continuing operations dilutive share computation for the three and six months ended June 30, 2021 and 2020 as their inclusion would be anti-dilutive:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Restricted stock awards | — |  |  | 2 |  |  | — |  |  | 3 |
Stock options | 33 |  |  | 193 |  |  | 39 |  |  | 209 |
Warrants | 89 |  |  | 657 |  |  | 116 |  |  | 688 |
| 122 |  |  | 852 |  |  | 155 |  |  | 900 |

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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=124432515&loc=d3e3550-109257 + Details
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