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Income (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table reconciles the income (loss) and average share amounts used to compute both basic and diluted loss per share:
|  | Years Ended |
|  | December 31, |
(Amounts in Thousands, Except for Per Share Amounts) |  | 2020 |  |  | 2019 |
Net income attributable to Perma-Fix Environmental Services, Inc., common stockholders: |  |  |  |  |  |  |  |
Income from continuing operations, net of taxes |  | $ | 3,149 |  |  | $ | 2,732 |
Net loss attributable to non-controlling interest |  |  | (123 | ) |  |  | (124 | )
Income from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | 3,272 |  |  | $ | 2,856 |
Loss from discontinuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  | (412 | ) |  |  | (541 | )
Net income attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | 2,860 |  |  | $ | 2,315 |
Basic income per share attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | .24 |  |  | $ | .19 |
Diluted income per share attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | .23 |  |  | $ | .19 |
Weighted average shares outstanding: |  |  |  |  |  |  |  |
Basic weighted average shares outstanding |  |  | 12,139 |  |  |  | 12,046 |
Add: dilutive effect of stock options |  |  | 184 |  |  |  | 14 |
Add: dilutive effect of warrants |  |  | 24 |  |  |  | — |
Diluted weighted average shares outstanding |  |  | 12,347 |  |  |  | 12,060 |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: |  |  |  |  |  |  |  |
Stock options |  |  | 42 |  |  |  | 482 |
Warrant |  |  | — |  |  |  | 60 |

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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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