Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Income (Loss) Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Earnings Per Share [Abstract]    
Loss from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders $ (3,088,000) $ (12,675,000)
Loss from discontinuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders (592,000) (730,000)
Net loss attributable to Perma-Fix Environmental Services, Inc. common stockholders $ (3,680,000) $ (13,405,000)
Basic loss per share attributable to Perma-Fix Environmental Services, Inc. common stockholders $ (0.31) $ (1.15)
Diluted loss per share attributable to Perma-Fix Environmental Services, Inc. common stockholders $ (0.31) $ (1.15)
Basic weighted average shares outstanding 11,706,000 11,608,000
Add: dilutive effect of stock options
Add: dilutive effect of warrants
Diluted weighted average shares outstanding 11,706,000 11,608,000
Potential shares excluded from above weighted average share calculation due to their anti-dilutive effect include: Stock options 595,000 150,000