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Note 2 - Summary of Significant Accounting Policies (Details) - Customer Concentration Risk (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| USEC [Member] | Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | ||
| Concentration Risk [Line Items] | ||
| Revenues |
$ 10,272,000us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_USECMember |
$ 2,037,000us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_USECMember |
| % of Total Revenue |
18.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_USECMember |
2.70%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_USECMember |
| USEC [Member] | ||
| Concentration Risk [Line Items] | ||
| Revenues |
10,272,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = pesi_USECMember |
2,037,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = pesi_USECMember |
| CH Plateau Remediation Company [Member] | Sales Revenue, Services, Net [Member] | Customer Concentration Risk [Member] | ||
| Concentration Risk [Line Items] | ||
| Revenues |
5,762,000us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_CHPlateauRemediationCompanyMember |
19,922,000us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_CHPlateauRemediationCompanyMember |
| % of Total Revenue |
10.10%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_CHPlateauRemediationCompanyMember |
26.80%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = pesi_CHPlateauRemediationCompanyMember |
| CH Plateau Remediation Company [Member] | ||
| Concentration Risk [Line Items] | ||
| Revenues |
$ 5,762,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = pesi_CHPlateauRemediationCompanyMember |
$ 19,922,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = pesi_CHPlateauRemediationCompanyMember |
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- Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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