The following is a reconciliation of basic net income (loss) per share to diluted net income (loss) per share for the three and six months ended June 30, 2012 and 2011:
| | Three Months Ended June 30, | | | | | | | | | | | | (Amounts in Thousands, Except for Per Share Amounts) | | | | | | | | | | | | | (Loss) income per share from continuing operations attributable to Perma-Fix Environmental Services, Inc.common stockholders | | | | | | | | | | | | | (Loss) income from continuing operations | | $ | (1,231 | ) | | $ | 2,552 | | | $ | (2,143 | ) | | $ | 2,019 | | Basic (loss) income per share | | $ | (.02 | ) | | $ | .05 | | | $ | (.04 | ) | | $ | .04 | | Diluted (loss) income per share | | $ | (.02 | ) | | $ | .05 | | | $ | (.04 | ) | | $ | .04 | | | | | | | | | | | | | | | | | | | (Loss) income per share from discontinued operations attributable to Perma-Fix Environemental Services, Inc .common stockholders | | | | | | | | | | | | | | | | | (Loss) income from discontinued operations | | $ | (60 | ) | | $ | (32 | ) | | $ | (198 | ) | | $ | 180 | | Basic (loss) income per share | | $ | - | | | $ | - | | | $ | - | | | $ | - | | Diluted (loss) income per share | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | | | | | | | | | | | | | | | | | Weighted average common shares outstanding - basic | | | 56,094 | | | | 55,136 | | | | 56,078 | | | | 55,118 | | Potential shares exercisable under stock option plans | | | - | | | | - | | | | - | | | | 5 | | Potential shares upon exercise of Warrants | | | - | | | | - | | | | - | | | | - | | Weighted average shares outstanding - diluted | | | 56,094 | | | | 55,136 | | | | 56,078 | | | | 55,123 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: | | | | | | | | | | | | | | | | | | | | 2,614 | | | | 2,467 | | | | 2,124 | | | | 2,317 | | Upon exercise of Warrants | | | - | | | | 150 | | | | - | | | | 150 | |
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