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SCHEDULE OF ASSET RETIREMENT OBLIGATIONS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Asset Retirement Obligation Disclosure [Abstract]
Balance at beginning	$ 3,348	$ 3,539
Amortization of closure and post-closure asset	(250)	(191)
Addition to closure and post-closure asset	478
Balance at end	$ 3,576	$ 3,348

X

- Definition

Addition to closure and post closure asset.

+ References

No definition available.

+ Details

Name:	PESI_AdditionToClosureAndPostClosureAsset
Namespace Prefix:	PESI_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the amortization for the period in the amount of closure and post-closure asset of disposal facilities.

+ References

No definition available.

+ Details

Name:	PESI_AmortizationOfClosureAndPostClosureAsset
Namespace Prefix:	PESI_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the carrying amount of closure and post closure assets of disposal facilities.

+ References

No definition available.

+ Details

Name:	PESI_ClosureAndPostClosureAssets
Namespace Prefix:	PESI_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_AssetRetirementObligationDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration