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Schedule of Capital Expenditures (Details) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting [Abstract]
Equipment purchases subject to financing and finance leases	$ 30	$ 361	$ 162	$ 406

X

- Definition

Equipment purchases subject to financing and finance leases.

+ References

No definition available.

+ Details

Name:	PESI_EquipmentPurchasesSubjectToFinancingAndFinanceLeases
Namespace Prefix:	PESI_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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