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Note 2 - Summary of Significant Accounting Policies (Details) (USD $)
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12 Months Ended |
0 Months Ended |
3 Months Ended |
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Dec. 31, 2014
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Dec. 31, 2013
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Oct. 01, 2014
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Oct. 01, 2013
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Jul. 29, 2014
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Sep. 30, 2014
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Percentage Of Reserves For Doubtful Accounts Receivable |
100.00%pesi_PercentageOfReservesForDoubtfulAccountsReceivable
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| Contract Receivable Retainage |
$ 11,000us-gaap_ContractReceivableRetainage
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$ 135,000us-gaap_ContractReceivableRetainage
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| Depreciation |
3,602,000us-gaap_Depreciation
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3,381,000us-gaap_Depreciation
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| Goodwill, Impairment Loss |
380,000us-gaap_GoodwillImpairmentLoss
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27,856,000us-gaap_GoodwillImpairmentLoss
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| Finite-Lived Intangible Assets, Net |
1,967,000us-gaap_FiniteLivedIntangibleAssetsNet
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| Self Insurance Reserve, Current |
397,000us-gaap_SelfInsuranceReserveCurrent
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473,000us-gaap_SelfInsuranceReserveCurrent
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| SelfInsurance Expenses For Continuing Operations |
2,697,000pesi_SelfInsuranceExpensesForContinuingOperations
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2,906,000pesi_SelfInsuranceExpensesForContinuingOperations
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| Equity Option [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) |
201,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
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339,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_StockOptionMember
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| Building and Building Improvements [Member] | Minimum [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Property, Plant and Equipment, Useful Life |
10 years
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| Building and Building Improvements [Member] | Maximum [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Property, Plant and Equipment, Useful Life |
40 years
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| Furniture and Fixtures [Member] | Minimum [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Property, Plant and Equipment, Useful Life |
3 years
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| Furniture and Fixtures [Member] | Maximum [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Property, Plant and Equipment, Useful Life |
7 years
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| PFSF Facility Fire Damage [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Asset Impairment Charges |
723,000us-gaap_AssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= pesi_PFSFFacilityFireDamageMember
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130,000us-gaap_AssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= pesi_PFSFFacilityFireDamageMember
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| Workers Compensation [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Escrow Deposit |
35,000us-gaap_EscrowDeposit
/ us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis
= pesi_WorkersCompensationMember
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| SYA [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Escrow Deposit |
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50,000us-gaap_EscrowDeposit
/ us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsAxis
= pesi_SYAMember
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| Federal Government [Member] | Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Revenues |
34,780,000us-gaap_Revenues
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= pesi_FederalGovernmentMember
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47,557,000us-gaap_Revenues
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= pesi_FederalGovernmentMember
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| Concentration Risk, Percentage |
60.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= pesi_FederalGovernmentMember
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63.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueServicesNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= pesi_FederalGovernmentMember
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| Treatment, SEC, And CH Plateau [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Goodwill, Impairment Loss |
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27,856,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmetnSECAndCHPlateauMember
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| Treatment [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Goodwill, Impairment Loss |
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13,691,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
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0us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
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0us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
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| PCB Permit [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Number Of Definte-Lived Permits |
1pesi_NumberOfDefiniteLivedPermits
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pesi_PCBPermitMember
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| Finite-Lived Intangible Assets, Net |
227,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pesi_PCBPermitMember
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| Accounts Receivable [Member] | Customer Concentration Risk [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Concentration Risk, Percentage |
13.40%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
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13.90%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
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| Perma-Fix Environmental Services UK (SECRA) [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Equity Method Investment, Ownership Percentage |
75.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ dei_LegalEntityAxis
= pesi_PermaFixEnvironmentalServicesUKSECRAMember
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| Perma-Fix of Medical Corporation [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Equity Method Investment, Ownership Percentage |
64.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ dei_LegalEntityAxis
= pesi_PermaFixOfMedicalCorporationMember
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| SYA [Member] |
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| Note 2 - Summary of Significant Accounting Policies (Details) [Line Items] |
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| Goodwill, Impairment Loss |
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$ 380,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= pesi_SYAMember
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$ 380,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= pesi_SYAMember
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