Quarterly report pursuant to Section 13 or 15(d)

Income (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details)

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Income (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Earnings Per Share [Abstract]        
Income (loss) from continuing operations, net of taxes $ 788,000 $ (1,226,000) $ 1,040,000 $ (1,901,000)
Net loss attributable to non-controlling interest (28,000) (217,000) (68,000) (296,000)
Income (loss) from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders 816,000 (1,009,000) 1,108,000 (1,605,000)
Loss from discontinuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders (206,000) (160,000) (363,000) (291,000)
Net income (loss) attributable to Perma-Fix Environmental Services, Inc. common stockholders $ 610,000 $ (1,169,000) $ 745,000 $ (1,896,000)
Basic income (loss) per share attributable to Perma-Fix Environmental Services, Inc. common stockholders $ .05 $ (.10) $ .06 $ (.16)
Diluted income (loss) per share attributable to Perma-Fix Environmental Services, Inc. common stockholders $ .05 $ (.10) $ .06 $ (.16)
Basic weighted average shares outstanding 11,813,000 11,698,000 11,780,000 11,690,000
Add: dilutive effect of stock options 100,000 69,000
Diluted weighted average shares outstanding 11,913,000 11,698,000 11,849,000 11,690,000
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: Upon exercise of options 100,000 205,000 100,000 205,000