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Note 5 - Income (Loss) Per Share | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] |
5. | Income (Loss) Per Share
Basic Income (loss) per share is calculated based on the weighted-average number of outstanding common shares during the applicable period. Diluted income (loss) per share is based on the weighted-average number of outstanding common shares plus the weighted-average number of potential outstanding common shares. In periods where they are anti-dilutive, such amounts are excluded from the calculations of dilutive earnings per share. The following table reconciles the income (loss) and average share amounts used to compute both basic and diluted income (loss) per share:
|  | 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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