Name:	PESI_CommitmentsAndContingenciesLineItems
Namespace Prefix:	PESI_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Coverage amount under the policy.

No definition available.

Name:	PESI_CoverageAmountUnderPolicy
Namespace Prefix:	PESI_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Insurer's obligation to entity on termination of contract in terms of percentage of sinking fund.

No definition available.

Name:	PESI_InsurersObligationToEntityOnTerminationOfContract
Namespace Prefix:	PESI_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Maximum allowable coverage of insurance policy against annual inflation and other performance and surety bond requirements.

No definition available.

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

Period of finite risk insurance policy.

No definition available.

Name:	PESI_PeriodOfFiniteRiskInsurancePolicy
Namespace Prefix:	PESI_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Self insured retention.

No definition available.

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

Amount of interest income earned from interest bearing assets classified as other.

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Name:	us-gaap_InterestIncomeOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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