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SCHEDULE OF INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Permits, beginning balance	$ 8,922	$ 8,790
Permits in progress	433	132
Permit renewal	121
Permits, ending balance	$ 9,476	$ 8,922

X

- Definition

Costs associated with permits in progress.

+ References

No definition available.

+ Details

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

X

- Definition

Costs associated with permit renewal.

+ References

No definition available.

+ Details

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

X

- Definition

Carrying amount (net of any accumulated depreciation) as of the balance sheet date of operating permits having definite or indefinite lives.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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