Quarterly report pursuant to sections 13 or 15(d)

Loss Per Share (Details)

v2.4.0.6
Loss Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Loss per share from continuing operations attributable to Perma-Fix Environmental Services, Inc. common stockholders    
Loss from continuing operations $ (2,888) $ (807)
Basic loss per share (in dollars per share) $ (0.05) $ (0.02)
Diluted loss per share (in dollars per share) $ (0.05) $ (0.02)
Loss per share from discontinued operations attributable to Perma-Fix Environmental Services, Inc. common stockholders    
Loss from discontinued operations $ (27) $ (138)
Basic loss per share (in dollars per share) $ 0 $ 0
Diluted loss per share (in dollars per share) $ 0 $ 0
Weighted average common shares outstanding - basic (in shares) 56,272 56,062
Potential shares exercisable under stock option plans (in shares) 0 0
Weighted average common shares outstanding - diluted (in shares) 56,272 56,062
Stock Options [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect included (in shares) 2,234 1,827