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Allowance For Loan Losses (Composition Of The Allowance For Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | $ 5,064 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 |  | $ 3,660 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 |
Allowance for loan losses collectively evaluated for impairment | 50,344 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment |  | 50,692 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment |
Total ending allowance balance | 55,408 us-gaap_FinancingReceivableAllowanceForCreditLosses |  | 54,352 us-gaap_FinancingReceivableAllowanceForCreditLosses |
Loans individually evaluated for impairment | 70,461 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment |  | 73,676 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment |
Loans collectively evaluated for impairment | 4,760,369 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment |  | 4,756,006 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment |
Total ending loan balance, net of accrued interest receivable | 4,830,830 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome |  | 4,829,682 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome |
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 7.18695%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment |  | 4.9677%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 1.05757%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment |  | 1.06585%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment |
Total ending allowance for loan losses balance as a percentage of loan balance | 1.14697%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans |  | 1.12537%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans |
Recorded investment | 70,492 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment |  | 73,712 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment |
Recorded investment collectively evaluated for impairment | 4,774,004 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment |  | 4,769,599 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment |
Recorded Investment | 4,844,496 prk_LoansAndLeasesReceivableRecordedInvestment |  | 4,843,311 prk_LoansAndLeasesReceivableRecordedInvestment |
Commercial Financial And Agricultural [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | 1,839 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 981 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Allowance for loan losses collectively evaluated for impairment | 9,522 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 9,738 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Total ending allowance balance | 11,361 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 10,719 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Loans individually evaluated for impairment | 20,570 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 19,103 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Loans collectively evaluated for impairment | 823,763 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 837,432 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Total ending loan balance, net of accrued interest receivable | 844,333 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember | [1] | 856,535 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember | [1]
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 8.9402%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 5.13532%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 1.15591%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 1.16284%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Total ending allowance for loan losses balance as a percentage of loan balance | 1.34556%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 1.25144%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Recorded investment | 20,571 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 19,106 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Recorded investment collectively evaluated for impairment | 827,027 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |  | 840,647 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember |
Recorded Investment | 847,598 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember | [1] | 859,753 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_CommercialFinancialAndAgriculturalMember | [1]
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | 645 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 262 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Allowance for loan losses collectively evaluated for impairment | 8,651 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 8,546 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Total ending allowance balance | 9,296 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 8,808 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Loans individually evaluated for impairment | 16,892 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 21,978 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Loans collectively evaluated for impairment | 1,054,373 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 1,047,659 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Total ending loan balance, net of accrued interest receivable | 1,071,265 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | [1] | 1,069,637 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | [1]
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 3.81838%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 1.1921%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 0.82049%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 0.81572%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Total ending allowance for loan losses balance as a percentage of loan balance | 0.86776%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 0.82346%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Recorded investment | 16,900 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 21,989 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Recorded investment collectively evaluated for impairment | 1,057,894 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |  | 1,051,194 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Recorded Investment | 1,074,794 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | [1] | 1,073,183 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember | [1]
Construction Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | 2,157 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 1,812 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Allowance for loan losses collectively evaluated for impairment | 6,598 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 6,840 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Total ending allowance balance | 8,755 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 8,652 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Loans individually evaluated for impairment | 7,802 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 7,690 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Loans collectively evaluated for impairment | 141,973 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 148,114 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Total ending loan balance, net of accrued interest receivable | 149,775 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 155,804 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 27.64676%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 23.56307%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 4.64736%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 4.61806%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Total ending allowance for loan losses balance as a percentage of loan balance | 5.84543%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 5.55313%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Recorded investment | 7,802 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 7,687 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Recorded investment collectively evaluated for impairment | 142,374 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 148,512 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Recorded Investment | 150,176 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |  | 156,199 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = prk_ConstructionRealEstateMember |
Residential Real Estate [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | 423 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 605 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Allowance for loan losses collectively evaluated for impairment | 14,089 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 14,167 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Total ending allowance balance | 14,512 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 14,772 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Loans individually evaluated for impairment | 25,197 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 24,905 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Loans collectively evaluated for impairment | 1,824,208 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,826,470 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Total ending loan balance, net of accrued interest receivable | 1,849,405 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,851,375 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 1.67877%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 2.42923%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 0.77234%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 0.77565%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Total ending allowance for loan losses balance as a percentage of loan balance | 0.78468%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 0.79789%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Recorded investment | 25,219 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 24,930 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Recorded investment collectively evaluated for impairment | 1,827,796 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,829,931 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Recorded Investment | 1,853,015 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |  | 1,854,861 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialPortfolioSegmentMember |
Consumer [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | 0 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 0 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance for loan losses collectively evaluated for impairment | 11,484 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 11,401 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Total ending allowance balance | 11,484 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 11,401 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Loans individually evaluated for impairment | 0 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 0 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Loans collectively evaluated for impairment | 912,854 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 893,160 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Total ending loan balance, net of accrued interest receivable | 912,854 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 893,160 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 1.25803%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 1.27648%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Total ending allowance for loan losses balance as a percentage of loan balance | 1.25803%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 1.27648%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Recorded investment | 0 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 0 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Recorded investment collectively evaluated for impairment | 915,671 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 896,127 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Recorded Investment | 915,671 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |  | 896,127 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember |
Leases [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance for loan losses individually evaluated for impairment | 0 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0 us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Allowance for loan losses collectively evaluated for impairment | 0 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0 us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Total ending allowance balance | 0 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Loans individually evaluated for impairment | 0 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0 us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Loans collectively evaluated for impairment | 3,198 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 3,171 us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Total ending loan balance, net of accrued interest receivable | 3,198 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 3,171 us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoansCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Total ending allowance for loan losses balance as a percentage of loan balance | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0.00%prk_LoansAndLeasesReceivableRatioOfAllowanceForLoanLossesToTotalLoans / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Recorded investment | 0 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 0 prk_LoansAndLeasesReceivableRecordedInvestmentIndividuallyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Recorded investment collectively evaluated for impairment | 3,242 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | 3,188 prk_LoansAndLeasesReceivableRecordedInvestmentCollectivelyEvaluatedForImpairment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
Recorded Investment | $ 3,242 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |  | $ 3,188 prk_LoansAndLeasesReceivableRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_FinanceLeasesPortfolioSegmentMember |
[1] | Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.

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