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Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | $ 95,873 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus | $ 100,393 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Accruing restructured loans | 16,875 prk_RestructuredLoans | 16,332 prk_RestructuredLoans
Loans past due 90 days or more and accruing | 1,672 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing | 2,709 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing
Total nonperforming loans | 114,420 prk_FinancingReceivableRecordedInvestmentNonperforming | 119,434 prk_FinancingReceivableRecordedInvestmentNonperforming
Commercial Financial And Agricultural [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 20,008 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember | 18,826 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember
Accruing restructured loans | 570 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember | 297 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember
Loans past due 90 days or more and accruing | 73 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember | 229 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember
Total nonperforming loans | 20,651 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember | 19,352 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_CommercialFinancialAndAgriculturalMember
Construction Real Estate, SEPH Commercial Land and Development [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 2,077 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember | 2,078 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember
Accruing restructured loans | 0 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember | 0 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember
Total nonperforming loans | 2,077 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember | 2,078 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateSephCommercialLandAndDevelopmentMember
Construction Real Estate - Remaining Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 5,671 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember | 5,558 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember
Accruing restructured loans | 54 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember | 51 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember
Total nonperforming loans | 5,725 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember | 5,609 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateRemainingCommercialMember
Construction Real Estate - Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 89 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember | 59 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember
Accruing restructured loans | 93 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember | 94 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember | 9 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember
Total nonperforming loans | 182 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember | 162 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateMortgageMember
Construction Real Estate - Installment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 111 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember | 115 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember
Accruing restructured loans | 121 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember | 125 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember
Total nonperforming loans | 232 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember | 240 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ConstructionRealEstateInstallmentMember
Residential Real Estate - Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 24,635 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember | 24,336 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember
Accruing restructured loans | 584 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember | 594 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember |
Total nonperforming loans | 25,219 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember | 24,930 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateCommercialMember
Residential Real Estate - Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 21,323 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember | 21,869 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember
Accruing restructured loans | 10,631 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember | 10,349 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember
Loans past due 90 days or more and accruing | 719 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember | 1,329 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember
Total nonperforming loans | 32,673 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember | 33,547 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateMortgageMember
Residential Real Estate - HELOC [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 1,822 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember | 1,879 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember
Accruing restructured loans | 780 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember | 630 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember | 9 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember
Total nonperforming loans | 2,602 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember | 2,518 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateHomeEquityLineOfCreditMember
Residential Real Estate - Installment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 1,643 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember | 1,743 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember
Accruing restructured loans | 708 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember | 779 prk_RestructuredLoans / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember
Loans past due 90 days or more and accruing | 64 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember |
Total nonperforming loans | 2,415 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember | 2,522 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = prk_ResidentialRealEstateInstallmentMember
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 14,232 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 19,299 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
Accruing restructured loans | 2,668 prk_RestructuredLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 2,690 prk_RestructuredLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
Loans past due 90 days or more and accruing | 0 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Total nonperforming loans | 16,900 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | 21,989 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Nonaccrual loans | 4,262 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 4,631 us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Accruing restructured loans | 666 prk_RestructuredLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 723 prk_RestructuredLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Loans past due 90 days or more and accruing | 816 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 1,133 us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Total nonperforming loans | $ 5,744 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | $ 6,487 prk_FinancingReceivableRecordedInvestmentNonperforming / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember

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- Definition Reflects the recorded investment in nonaccrual loans, renegotiated loans not currently on nonaccrual, and loans which are contractually past due 90 days or more but whose interest continues to accrue. + References No definition available. + Details
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- Definition Restructured Loans + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524 + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524 + Details
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