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v3.19.2

Subsequent Events (Details Narrative) - USD ($) $ in Thousands | Jul. 22, 2019 | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Finite risk sinking fund (restricted cash) - current |  | $ 5,000 |
American International Group, Inc [Member] |  |  |
Maximum allowable coverage of insurance policy |  | $ 39,000 |
Subsequent Event [Member] |  |  |
Sinking funds received | $ 5,000 |  |
Total coverage remaining balance under the policy in connection with the release of sinking funds | 19,314 |  |
Maximum allowable coverage of insurance policy | $ 28,177 |  |

X
- Definition As of the balance sheet date, the current portion of total amount into the sinking fund, along with interest income earned, in connection for the company's closure policies. + References No definition available. + Details
Name: | PESI_FiniteRiskSinkingFundCurrent
Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum allowable coverage of insurance policy against annual inflation and other performance and surety bond requirements. + References No definition available. + Details
Name: | PESI_MaximumAllowableCoverageOfInsurancePolicy
Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Sinking funds received. + References No definition available. + Details
Name: | PESI_ProceedsFromSinkingFunds
Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total coverage remaining balance under the policy in connection with the release of sinking funds. + References No definition available. + Details
Name: | PESI_TotalCoverageRemainingBalanceUnderPolicyInConnectionWithReleaseOfSinkingFunds
Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | srt_CounterpartyNameAxis=PESI_AmericanInternationalGroupIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |