Document and Entity Information	6 Months Ended
Document and Entity Information	Jun. 30, 2012	Aug. 01, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	PERMA FIX ENVIRONMENTAL SERVICES INC
Entity Central Index Key	0000891532
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		56,140,017
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012