XML 63 R52.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Note 14 - Subsequent Events (Details Textual) - USD ($) | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Apr. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016
Amendment to the Revised Loan Agreement [Member] | PNC Bank [Member] |  |  |
Line of Credit Facility Reduction, Additional Reduction |  | $ 750,000 |
Line of Credit Facility, Increase in Remaining Borrowing Capacity |  | 2,701,000 |
Perma-Fix Northwest Richland, Inc [Member] | Standby Letter of Credit for New Bonding Mechanism [Member] |  |  |
Debt Instrument, Collateral Amount |  | 2,500,000 |
Perma-Fix Northwest Richland, Inc [Member] | American International Group, Inc [Member] | Subsequent Event [Member] |  |  |
Release of the Sinking Fund Related to Second the Insurance Policy | $ 5,951,000 |  |
Release of Sinking Fund Related to Second Insurance Policy, Additional Interest Earned | $ 2,000 |  |
Perma-Fix Northwest Richland, Inc [Member] | American International Group, Inc [Member] | Other Noncurrent Assets [Member] |  |  |
Sinking Fund Related to Second Insurance Policy |  | $ 5,949,000 | $ 5,941,000

X
- Definition The increase in amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References No definition available. + Details
Name: | pesi_LineOfCreditFacilityIncreaseInRemainingBorrowingCapacity
Namespace Prefix: | pesi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of additional borrowing reduction pursuant to an amendment of the debt agreement. + References No definition available. + Details
Name: | pesi_LineOfCreditFacilityReductionAdditionalReduction
Namespace Prefix: | pesi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Additional interest earned which are included in the release of sinking fund related to the second insurance policy. + References No definition available. + Details
Name: | pesi_ReleaseOfSinkingFundRelatedToSecondInsurancePolicyAdditionalInterestEarned
Namespace Prefix: | pesi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the decrease to the sinking fund related to the second insurance policy. + References No definition available. + Details
Name: | pesi_ReleaseOfTheSinkingFundRelatedToSecondTheInsurancePolicy
Namespace Prefix: | pesi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the sinking fund related to the second insurance policy. + References No definition available. + Details
Name: | pesi_SinkingFundRelatedToSecondInsurancePolicy
Namespace Prefix: | pesi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of assets pledged to secure a debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
Name: | us-gaap_DebtInstrumentCollateralAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pesi_AmendmentToTheRevisedLoanAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=pesi_PNCBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=pesi_PermaFixNorthwestRichlandIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=pesi_StandbyLetterOfCreditForNewBondingMechanismMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_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: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |