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SCHEDULE OF DISPOSAL GROUPS, INCLUDING DISCONTINUED OPERATION BALANCE SHEET (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Discontinued Operations and Disposal Groups [Abstract] |  |
Other assets | $ 15 | $ 22
Total current assets | 15 | 22
Property, plant and equipment, net | 81 | 81
Total long-term assets | 81 | 81
Total assets | 96 | 103
Accounts payable | 3 | 4
Accrued expenses and other liabilities | 154 | 150
Environmental liabilities | 349 | 744
Total current liabilities | 506 | 898
Closure liabilities | 150 | 142
Environmental liabilities | 527 | 110
Total long-term liabilities | 677 | 252
Total liabilities | $ 1,183 | $ 1,150

X
- Definition Amount classified as current assets attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount classified as environmental liabilities attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as accounts payable and accrued liabilities attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as accounts payable attributable to discontinued operations not held for sale. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as current and noncurrent assets attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as assets attributable to discontinued operations not held for sale. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as other assets attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount classified as property, plant and equipment attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
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Balance Type: | debit
Period Type: | instant

X
- Definition Amount classified as liabilities attributable to discontinued operations not held for sale. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as liabilities attributable to discontinued operations not held for sale. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Amount classified as liabilities attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents closure liabilities of discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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X
- Definition Amount classified as environmental liabilities attributable to discontinued operations not held for sale. + References No definition available. + Details
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Namespace Prefix: | PESI_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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