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Note 8 - Income (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
|  | (Unaudited) |  |  | (Unaudited) |
(Amounts in Thousands, Except for Per Share Amounts) |  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
Income (loss) per share from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations |  | $ | 2,344 |  |  | $ | (568 | ) |  | $ | (3,720 | ) |  | $ | (4,372 | )
Basic income (loss) per share |  | $ | .20 |  |  | $ | (.05 | ) |  | $ | (.32 | ) |  | $ | (.39 | )
Diluted income (loss) per share |  | $ | .20 |  |  | $ | (.05 | ) |  | $ | (.32 | ) |  | $ | (.39 | )
Loss per share from discontinued operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss from discontinued operations |  | $ | (462 | ) |  | $ | (240 | ) |  | $ | (1,897 | ) |  | $ | (224 | )
Basic loss per share |  | $ | (.04 | ) |  | $ | (.02 | ) |  | $ | (.17 | ) |  | $ | (.02 | )
Diluted loss per share |  | $ | (.04 | ) |  | $ | (.02 | ) |  | $ | (.17 | ) |  | $ | (.02 | )
(Loss) income per share from insurance settlement of discontinued operations, net of taxes attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) gain on insurance settlement of discontinued operations, net of taxes |  | $ | (11 | ) |  | $ | ― |  |  | $ | 3,530 |  |  | $ | ― |
Basic income per share |  | $ | ― |  |  | $ | ― |  |  | $ | .31 |  |  | $ | ― |
Diluted income per share |  | $ | ― |  |  | $ | ― |  |  | $ | .31 |  |  | $ | ― |
Weighted average common shares outstanding – basic |  |  | 11,449 |  |  |  | 11,353 |  |  |  | 11,434 |  |  |  | 11,292 |
Potential shares exercisable under stock option plans |  |  | 8 |  |  | ― |  |  | ― |  |  | ― |
Potential shares upon exercise of Warrants |  |  | 33 |  |  | ― |  |  | ― |  |  | ― |
Weighted average shares outstanding – diluted |  |  | 11,490 |  |  |  | 11,353 |  |  |  | 11,434 |  |  |  | 11,292 |
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upon exercise of stock options |  |  | 207 |  |  |  | 391 |  |  |  | 207 |  |  |  | 373 |
Upon exercise of Warrants |  | ― |  |  | ― |  |  | ― |  |  | ― |

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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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