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Note 5 - Goodwill and Other Intangible Assets (Details) (USD $)
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12 Months Ended |
0 Months Ended |
3 Months Ended |
|
Dec. 31, 2014
|
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 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
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| Goodwill, Impairment Loss |
$ 380,000us-gaap_GoodwillImpairmentLoss
|
$ 27,856,000us-gaap_GoodwillImpairmentLoss
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| Finite-Lived Intangible Assets, Net |
1,967,000us-gaap_FiniteLivedIntangibleAssetsNet
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|
|
|
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| Amortization of Intangible Assets |
638,000us-gaap_AmortizationOfIntangibleAssets
|
745,000us-gaap_AmortizationOfIntangibleAssets
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| SEC [Member] | Services [Member] |
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| Note 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
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| Goodwill, Impairment Loss |
|
13,016,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
/ us-gaap_SubsegmentsAxis
= pesi_SECMember
|
|
|
|
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| CH Plateau Remediation Company [Member] | Services [Member] |
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| Note 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
|
|
|
|
|
|
| Goodwill, Impairment Loss |
|
1,149,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
/ us-gaap_SubsegmentsAxis
= pesi_CHPlateauRemediationCompanyMember
|
|
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| Treatment [Member] |
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|
| Note 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
|
|
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|
|
| Goodwill, Impairment Loss |
|
13,691,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
|
0us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
|
0us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_TreatmentMember
|
|
|
| Services [Member] | SYA [Member] |
|
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| Note 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
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|
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|
| Goodwill, Impairment Loss |
|
|
|
|
380,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= pesi_SYAMember
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
|
|
| Services [Member] |
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|
|
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|
| Note 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
|
|
|
|
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|
| Goodwill, Impairment Loss |
380,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
|
14,165,000us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= pesi_ServicesMember
|
|
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| PCB Permit [Member] |
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| Note 5 - Goodwill and Other Intangible Assets (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 Asset, Useful Life |
10 years
|
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| Finite-Lived Intangible Assets, Net |
227,000us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= pesi_PCBPermitMember
|
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| SYA [Member] |
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| Note 5 - Goodwill and Other Intangible Assets (Details) [Line Items] |
|
|
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| Goodwill, Impairment Loss |
|
|
|
|
$ 380,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= pesi_SYAMember
|
$ 380,000us-gaap_GoodwillImpairmentLoss
/ dei_LegalEntityAxis
= pesi_SYAMember
|