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
Mar. 31, 2018
Mar. 31, 2017
Earnings Per Share [Abstract]    
Income (loss) from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders $ 293,000 $ (596,000)
Loss from discontinuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders (157,000) (131,000)
Net income (loss) attributable to Perma-Fix Environmental Services, Inc. common stockholders $ 136,000 $ (727,000)
Basic Income (loss) per share attributable to Perma-Fix Environmental Services, Inc. common stockholders $ 0.01 $ (.06)
Diluted income (loss) per share attributable to Perma-Fix Environmental Services, Inc. common stockholders $ 0.01 $ (.06)
Basic weighted average shares outstanding 11,747,000 11,681,000
Add: dilutive effect of stock options 26,000
Diluted weighted average shares outstanding 11,773,000 11,681,000
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect include: Stock options 168,000 205,000