Annual report pursuant to Section 13 and 15(d)

Note 15 - Business Acquisition (Settlement and Release Agreement) (Details)

v2.4.1.9
Note 15 - Business Acquisition (Settlement and Release Agreement) (Details) (SEC [Member], USD $)
0 Months Ended
Feb. 12, 2013
Oct. 31, 2011
Jan. 10, 2012
Note 15 - Business Acquisition (Settlement and Release Agreement) (Details) [Line Items]      
Payments to Acquire Businesses, Gross $ 500,000us-gaap_PaymentsToAcquireBusinessesGross    
Escrow Deposit   2,000,000us-gaap_EscrowDeposit  
Business Combination, Withdrawal from Escrow Following Un-met Conditions     1,500,000pesi_BusinessCombinationWithdrawalFromEscrowFollowingUnMetConditions
October Note [Member]      
Note 15 - Business Acquisition (Settlement and Release Agreement) (Details) [Line Items]      
Business Combination, Consideration Transferred, Liabilities Incurred   2,500,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= pesi_SECMember
/ us-gaap_DebtInstrumentAxis
= pesi_OctoberNoteMember
 
Prinicipal Balance of Promissory Note Cancelled as Part of Legal Settlement Arising from Business Acquisition 1,460,000pesi_PrinicipalBalanceOfPromissoryNoteCancelledAsPartOfLegalSettlementArisingFromBusinessAcquisition
/ us-gaap_BusinessAcquisitionAxis
= pesi_SECMember
/ us-gaap_DebtInstrumentAxis
= pesi_OctoberNoteMember
   
New Note [Member]      
Note 15 - Business Acquisition (Settlement and Release Agreement) (Details) [Line Items]      
Business Combination, Consideration Transferred, Liabilities Incurred 230,000us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
/ us-gaap_BusinessAcquisitionAxis
= pesi_SECMember
/ us-gaap_DebtInstrumentAxis
= pesi_NewNoteMember
   
Debt Instrument, Term 2 years    
Debt Instrument, Interest Rate, Stated Percentage 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_BusinessAcquisitionAxis
= pesi_SECMember
/ us-gaap_DebtInstrumentAxis
= pesi_NewNoteMember
   
Debt Instrument, Number of Installments 24pesi_DebtInstrumentNumberOfInstallments
/ us-gaap_BusinessAcquisitionAxis
= pesi_SECMember
/ us-gaap_DebtInstrumentAxis
= pesi_NewNoteMember
   
Debt Instrument, Periodic Payment $ 10,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_BusinessAcquisitionAxis
= pesi_SECMember
/ us-gaap_DebtInstrumentAxis
= pesi_NewNoteMember
   
Debt Instrument, Date of First Required Payment Feb. 28, 2013