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(Loss) Income Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table reconciles the loss and average share amounts used to compute both basic and diluted loss per share:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | (Unaudited) |  |  | (Unaudited) |
(Amounts in Thousands, Except for Per Share Amounts) |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Net loss attributable to Perma-Fix Environmental Services, Inc., common stockholders: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (1,899 | ) |  | $ | (1,365 | ) |  | $ | (3,504 | ) |  | $ | (13,008 | )
Loss from discontinuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  | (145 | ) |  |  | (191 | ) |  |  | (436 | ) |  |  | (622 | )
Net loss attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (2,044 | ) |  | $ | (1,556 | ) |  | $ | (3,940 | ) |  | $ | (13,630 | )
Basic loss per share attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (.17 | ) |  | $ | (.13 | ) |  | $ | (.34 | ) |  | $ | (1.18 | )
Diluted loss per share attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (.17 | ) |  | $ | (.13 | ) |  | $ | (.34 | ) |  | $ | (1.18 | )
Weighted average shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average shares outstanding |  |  | 11,714 |  |  |  | 11,632 |  |  |  | 11,698 |  |  |  | 11,588 |
Add: dilutive effect of stock options |  |  | ─ |  |  |  | ─ |  |  |  | ─ |  |  |  | ─ |
Add: dilutive effect of warrants |  |  | ─ |  |  |  | ─ |  |  |  | ─ |  |  |  | ─ |
Diluted weighted average shares outstanding |  |  | 11,714 |  |  |  | 11,632 |  |  |  | 11,698 |  |  |  | 11,588 |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | 185 |  |  |  | 98 |  |  |  | 497 |  |  |  | 150 |

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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/2003/role/presentationRef -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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