Annual report pursuant to Section 13 and 15(d)

Note 14 - Commitments and Contingencies (Details Textual)

Note 14 - Commitments and Contingencies (Details Textual) - USD ($)		1 Months Ended	12 Months Ended		72 Months Ended
	Aug. 31, 2007	Jun. 30, 2003	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016
Bonds and Letters of Credit Outstanding Amount			$ 1,514,000
Operating Leases, Rent Expense, Net			1,027,000	$ 976,000
Non-Cancelable Operating Leases [Member]
Operating Leases, Rent Expense			735,000	659,000
American International Group, Inc [Member]
Period of Finite Risk Insurance Policy		25 years
Maximum Allowable Coverage of Insurance Policy			39,000,000		$ 39,000,000
Financial Assurance Coverage, Amount of Reduction During Period			9,711,000
Financial Assurance Coverage Amount under Insurance Policy			29,163,000		29,163,000
Sinking Fund Related to Insurance Policy			15,546,000	15,460,000	15,546,000
Interest Earned on Sinking Fund			1,075,000	989,000	$ 1,075,000
Interest Income, Other			$ 86,000	31,000
Insurers Obligation to Entity on Termination of Contract			100.00%		100.00%
American International Group, Inc [Member] \| Perma-Fix Northwest Richland, Inc [Member]
Financial Assurance Coverage Amount under Insurance Policy			$ 7,973,000		$ 7,973,000
Interest Income, Other			21,000	15,000
Financial Assurance Coverage Amount under Second Insurance Policy	$ 7,800,000
Annual Growth Rate of Financial Assurance Coverage Amount Under Second Insurance Policy	1.50%
Maximum Financial Assurance Coverage Amount Under Second Insurance Policy	$ 8,200,000
Sinking Fund Related to Second Insurance Policy			5,941,000	5,920,000	5,941,000
Interest Earned on Sinking Fund under Second Insurance Policy			$ 241,000	$ 220,000	241,000
Period of Finite Second Insurance Policy			4 years
Release of the Sinking Fund Related to Second the Insurance Policy			$ 5,941,000
Net Proceeds from the Release of the Sinking Fund Related to the Second Insurance Policy			3,441,000
American International Group, Inc [Member] \| Perma-Fix Northwest Richland, Inc [Member] \| Credit Facility Secured by a Bond [Member]
Financial Assurance Coverage Amount Under a Bond			7,000,000		7,000,000
Debt Instrument, Collateral Amount			$ 2,500,000		2,500,000
American International Group, Inc [Member] \| Perma-Fix Northwest Richland, Inc [Member] \| Minimum [Member]
Renewal Fee for Additional Year under Second Insurance Policy					41,000
American International Group, Inc [Member] \| Perma-Fix Northwest Richland, Inc [Member] \| Maximum [Member]
Renewal Fee for Additional Year under Second Insurance Policy					$ 46,000