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Fair Value of Financial Instruments Nonrecurring Basis (Details) (Nonrecurring Basis, USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Assets measured on nonrecurring basis  
Losses on impaired loans charged through allowance for loan losses $ 1.0pebo_ProvisionforLoanandLeaseLossesonImpairedLoans
Recorded losses for other real estate owned   
Significant Other Observable Inputs (Level 2)
  
Assets measured on nonrecurring basis  
Impaired loans, aggregate outstanding principal balance 2.7pebo_ImpairedFinancingReceivableOutstandingPrincipalBalanceMeasuredatFairValue
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Impaired loans, fair value $ 1.6pebo_ImpairedFinancingReceivableFairValueDisclosure
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