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Note 17 - Segment Reporting (Details) (USD $)
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0 Months Ended |
12 Months Ended |
0 Months Ended |
3 Months Ended |
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Aug. 02, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Jul. 29, 2014
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Oct. 01, 2014
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Oct. 01, 2013
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Sep. 30, 2014
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Number of Reportable Segments |
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2us-gaap_NumberOfReportableSegments
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| Disposal Group, Including Discontinued Operation, Assets, Including Not Held for Sale |
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$ 701,000pesi_AssetsOfDisposalGroupIncludingDiscontinuedOperationIncludingNotHeldForSale
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$ 4,481,000pesi_AssetsOfDisposalGroupIncludingDiscontinuedOperationIncludingNotHeldForSale
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| Assets |
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88,636,000us-gaap_Assets
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[1] |
92,060,000us-gaap_Assets
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[1] |
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| Debt Instrument, Unamortized Discount |
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137,000us-gaap_DebtInstrumentUnamortizedDiscount
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223,000us-gaap_DebtInstrumentUnamortizedDiscount
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| Debt Conversion, Converted Instrument, Warrants or Options Issued (in Shares) |
2us-gaap_DebtConversionConvertedInstrumentWarrantsOrOptionsIssued1
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| Stock Issued as Consideration for Debt (in Shares) |
90,000pesi_StockIssuedAsConsiderationForDebt
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| Debt Instrument, Face Amount |
3,000,000us-gaap_DebtInstrumentFaceAmount
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| Goodwill, Impairment Loss |
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380,000us-gaap_GoodwillImpairmentLoss
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27,856,000us-gaap_GoodwillImpairmentLoss
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| USEC [Member] |
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Revenues |
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10,272,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_USECMember
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2,037,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_USECMember
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| Concentration Risk, Percentage |
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18.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_USECMember
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2.70%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_USECMember
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| CH Plateau Remediation Company [Member] |
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Revenues |
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5,762,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_CHPlateauRemediationCompanyMember
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19,922,000us-gaap_Revenues
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_CHPlateauRemediationCompanyMember
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| Concentration Risk, Percentage |
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10.10%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_CHPlateauRemediationCompanyMember
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26.80%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_CHPlateauRemediationCompanyMember
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| Services [Member] | SYA [Member] |
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Goodwill, Impairment Loss |
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380,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= pesi_SYAMember
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
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| Services [Member] |
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Assets |
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8,920,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
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[1] |
11,951,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
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[1] |
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| Goodwill, Impairment Loss |
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380,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
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14,165,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
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| Treatment [Member] |
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Assets |
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50,226,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
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[1] |
49,978,000us-gaap_Assets
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
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[1] |
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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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| PF Medical S.A. [Member] |
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| Note 17 - Segment Reporting (Details) [Line Items] |
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| Assets |
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1,213,000us-gaap_Assets
/ dei_LegalEntityAxis
= pesi_PFMedicalSAMember
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0us-gaap_Assets
/ dei_LegalEntityAxis
= pesi_PFMedicalSAMember
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| SYA [Member] |
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| Note 17 - Segment Reporting (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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