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(Loss) Income Per Share (Tables) | 6 Months Ended
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Jun. 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) income per share to diluted net loss per share for the three and six months ended June 30, 2013 and 2012:
|  | Three Months Ended June 30, (Unaudited) |  |  | Six Months Ended June 30, (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 |  | $ | (980 | ) |  | $ | (1,009 | ) |  | $ | (3,868 | ) |  | $ | (1,816 | )
Basic loss per share |  | $ | (.02 | ) |  | $ | (.02 | ) |  | $ | (.07 | ) |  | $ | (.04 | )
Diluted loss per share |  | $ | (.02 | ) |  | $ | (.02 | ) |  | $ | (.07 | ) |  | $ | (.04 | )
Income (loss) per share from discontinued operations attributable to Perma-Fix Environemental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from discontinued operations |  | $ | 43 |  |  | $ | (60 | ) |  | $ | 15 |  |  | $ | (198 | )
Basic income (loss) per share |  | $ | ¾ |  |  | $ | ¾ |  |  | $ | ¾ |  |  | $ | ¾ |
Diluted income (loss) per share |  | $ | ¾ |  |  | $ | ¾ |  |  | $ | ¾ |  |  | $ | ¾ |
Weighted average common shares outstanding – basic |  |  | 56,334 |  |  |  | 56,094 |  |  |  | 56,303 |  |  |  | 56,078 |
Potential shares exercisable under stock option plans |  |  | ¾ |  |  |  | ¾ |  |  |  | ¾ |  |  |  | ¾ |
Weighted average shares outstanding – diluted |  |  | 56,334 |  |  |  | 56,094 |  |  |  | 56,303 |  |  |  | 56,078 |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upon exercise of stock options |  |  | 1,954 |  |  |  | 2,614 |  |  |  | 1,954 |  |  |  | 2,124 |

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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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