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Loss Per Share (Tables) | 9 Months Ended
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Sep. 30, 2013
Loss Per Share [Abstract] |
Reconciliation of basic net income (loss) per share to diluted net income (loss) per share | The following is a reconciliation of basic loss per share to diluted net loss per share for the three and nine months ended September 30, 2013 and 2012:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | (Unaudited) |  |  | (Unaudited) |
(Amounts in Thousands, Except for Per Share Amounts) |  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
Loss per share from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |
Loss from continuing operations |  | $ | (568 | ) |  | $ | (493 | ) |  | $ | (4,372 | ) |  | $ | (2,467 | )
Basic loss per share |  | $ | (.05 | ) |  | $ | (.04 | ) |  | $ | (.39 | ) |  | $ | (.22 | )
Diluted loss per share |  | $ | (.05 | ) |  | $ | (.04 | ) |  | $ | (.39 | ) |  | $ | (.22 | )
Loss per share from discontinued operations attributable to Perma-Fix Environemental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations |  | $ | (240 | ) |  | $ | (61 | ) |  | $ | (224 | ) |  | $ | (259 | )
Basic loss per share |  | $ | (.02 | ) |  | $ | (.01 | ) |  | $ | (.02 | ) |  | $ | (.02 | )
Diluted loss per share |  | $ | (.02 | ) |  | $ | (.01 | ) |  | $ | (.02 | ) |  | $ | (.02 | )
Weighted average common shares outstanding – basic |  |  | 11,353 |  |  |  | 11,228 |  |  |  | 11,292 |  |  |  | 11,220 |
Potential shares exercisable under stock option plans |  |  | ― |  |  |  | ― |  |  |  | ― |  |  |  | ― |
Potential shares upon exercise of Warrants |  |  | ― |  |  |  | ― |  |  |  | ― |  |  |  | ― |
Weighted average shares outstanding – diluted |  |  | 11,353 |  |  |  | 11,228 |  |  |  | 11,292 |  |  |  | 11,220 |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upon exercise of stock options |  |  | 391 |  |  |  | 535 |  |  |  | 373 |  |  |  | 523 |
Upon exercise of Warrants |  |  | ― |  |  |  | ― |  |  |  | ― |  |  |  | ― |

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- Definition Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). + 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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