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Note 5 - Income (Loss) Per Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | (Unaudited) |  |  | (Unaudited) |
(Amounts in Thousands, Except for Per Share Amounts) |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Net (loss) income attributable to Perma-Fix Environmental Services, Inc., common stockholders: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (loss) from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | 559 |  |  | $ | (2,361 | ) |  | $ | (1,282 | ) |  | $ | (6,063 | )
(Loss) income from discontinuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders |  |  | (713 | ) |  |  | 2,372 |  |  |  | (936 | ) |  |  | 2,105 |
Net (loss) income attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (154 | ) |  | $ | 11 |  |  | $ | (2,218 | ) |  | $ | (3,958 | )
Basic (loss) income per share attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (.01 | ) |  | $ | — |  |  | $ | (.19 | ) |  | $ | (.35 | )
Diluted (loss) income per share attributable to Perma-Fix Environmental Services, Inc. common stockholders |  | $ | (.01 | ) |  | $ | — |  |  | $ | (.19 | ) |  | $ | (.35 | )
Weighted average shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average shares outstanding |  |  | 11,505 |  |  |  | 11,433 |  |  |  | 11,496 |  |  |  | 11,426 |
Add: dilutive effect of stock options |  |  | 4 |  |  |  | — |  |  |  | — |  |  |  | — |
Add: dilutive effect of warrants |  |  | 27 |  |  |  | — |  |  |  | — |  |  |  | — |
Diluted weighted average shares outstanding |  |  | 11,536 |  |  |  | 11,433 |  |  |  | 11,496 |  |  |  | 11,426 |
Potential shares excluded from above weighted average share calcualtions due to their anti-dilutive effect include: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Upon exercise of options |  |  | 202,600 |  |  |  | 276,800 |  |  |  | 185,800 |  |  |  | 276,800 |

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- References No definition available. + Details
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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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