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Goodwill and Other Intangible Assets (Mortgage Servicing Rights Activity) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2010
Goodwill and Intangible Assets Disclosure [Abstract]        
Servicing rights, beginning balance $ 2,295,000pebo_MortgageServicingRights $ 2,073,000pebo_MortgageServicingRights   $ 1,544,000pebo_MortgageServicingRights
Amortization (597,000)pebo_MortgageServicingRightsAmortization (652,000)pebo_MortgageServicingRightsAmortization (616,000)pebo_MortgageServicingRightsAmortization  
Servicing rights originated 497,000us-gaap_PaymentsForProceedsFromMortgageServicingRights 675,000us-gaap_PaymentsForProceedsFromMortgageServicingRights 1,145,000us-gaap_PaymentsForProceedsFromMortgageServicingRights  
Servicing rights acquired 43,000pebo_ServicingRightsAcquired 199,000pebo_ServicingRightsAcquired 0pebo_ServicingRightsAcquired  
Servicing rights, ending balance 2,238,000pebo_MortgageServicingRights 2,295,000pebo_MortgageServicingRights 2,073,000pebo_MortgageServicingRights 1,544,000pebo_MortgageServicingRights
Other Intangible Assets        
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance $ 0us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance