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v2.4.1.9

Loans (Narrative) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans and Leases Receivable, Deferred Income | $ 9,600,000 us-gaap_LoansAndLeasesReceivableDeferredIncome |  | $ 9,400,000 us-gaap_LoansAndLeasesReceivableDeferredIncome
Troubled Debt Restructuring, Classification removed |  | 966,000 prk_TroubledDebtRestructuringClassificationremoved |
Partial Charge-Offs On Impaired Loans | 25,792,000 prk_PartialChargeOffsOnImpairedLoans |  | 32,480,000 prk_PartialChargeOffsOnImpairedLoans
Impaired Financing Receivable, Related Allowance | 5,064,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance |  | 3,660,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance
Recorded investment, related to loans | 11,300,000 prk_ImpairedFinancingReceivableRecordedInvestmentLoansWithSpecificReserve |  | 9,300,000 prk_ImpairedFinancingReceivableRecordedInvestmentLoansWithSpecificReserve
Troubled Debt Restructuring Included In Nonaccrual Loans | 42,600,000 prk_TroubledDebtRestructuringIncludedInNonaccrualLoans |  | 47,500,000 prk_TroubledDebtRestructuringIncludedInNonaccrualLoans
TDRs included in accruing loan totals | 16,900,000 prk_TroubledDebtRestructuringIncludedInAccruingLoans |  | 16,300,000 prk_TroubledDebtRestructuringIncludedInAccruingLoans
Nonaccrual Trouble Debt Restructuring Current | 18,100,000 prk_NonaccrualTroubleDebtRestructuringCurrent |  | 15,700,000 prk_NonaccrualTroubleDebtRestructuringCurrent
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR | 2,200,000 prk_TroubledDebtRestructuringCommitmentToLend |  | 1,400,000 prk_TroubledDebtRestructuringCommitmentToLend
Specific reserves related to troubled debt restructuring | 3,500,000 prk_SpecificReservesRelatedToTroubledDebtRestructuring |  | 2,400,000 prk_SpecificReservesRelatedToTroubledDebtRestructuring
Additional specific reserves related to troubled debt restructurings | 857,000 prk_AdditionalSpecificReservesRelatedToTroubledDebtRestructuring | 18,000 prk_AdditionalSpecificReservesRelatedToTroubledDebtRestructuring |
Modified substandard commercial loans, total recorded investment | 131,000 prk_ModifiedSubstandardCommercialLoansTotalRecordedInvestment | 392,000 prk_ModifiedSubstandardCommercialLoansTotalRecordedInvestment |
Modified substandard consumer loans, total recorded investment | 4,500,000 prk_ModifiedSubstandardConsumerLoansTotalRecordedInvestment | 5,700,000 prk_ModifiedSubstandardConsumerLoansTotalRecordedInvestment |
Loan Modifications on Nonacrrual status | 1,100,000 prk_FinancingReceivableModificationsRecordedInvestmentNonaccrualAtPriorFiscalYearEnd | 900,000 prk_FinancingReceivableModificationsRecordedInvestmentNonaccrualAtPriorFiscalYearEnd |
Loan past due period before entering default status | 30 days |  |
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period | 1,116,000 prk_FinancingReceivableModificationsSubsequentDefaultRecordedInvestmentDuringPeriod | 2,860,000 prk_FinancingReceivableModificationsSubsequentDefaultRecordedInvestmentDuringPeriod |
Deposit Liabilities Reclassified as Loans Receivable | 3,200,000 us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1 |  | 2,300,000 us-gaap_DepositLiabilitiesReclassifiedAsLoansReceivable1
Financing Receivable With No Related Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Partial Charge-Offs On Impaired Loans | 21,600,000 prk_PartialChargeOffsOnImpairedLoans / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithNoRelatedAllowanceRecordedMember |  | 32,400,000 prk_PartialChargeOffsOnImpairedLoans / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithNoRelatedAllowanceRecordedMember
Financing Receivable With A Related Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Partial Charge-Offs On Impaired Loans | 4,200,000 prk_PartialChargeOffsOnImpairedLoans / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithRelatedAllowanceRecordedMember |  | 0 prk_PartialChargeOffsOnImpairedLoans / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithRelatedAllowanceRecordedMember
Commercial Real Estate [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period |  | 872,000 prk_FinancingReceivableModificationsSubsequentDefaultRecordedInvestmentDuringPeriod / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember |
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | 0 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithNoRelatedAllowanceRecordedMember |  | 0 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithNoRelatedAllowanceRecordedMember
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Impaired Financing Receivable, Related Allowance | 645,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithRelatedAllowanceRecordedMember |  | 262,000 us-gaap_ImpairedFinancingReceivableRelatedAllowance / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_CommercialRealEstatePortfolioSegmentMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = prk_FinancingReceivableWithRelatedAllowanceRecordedMember
Accruing [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans modified during period |  | 499,000 prk_FinancingReceivableModificationsAggregateAmountOfLoansModifiedDuringPeriod / prk_TroubledDebtRestructuringRecordedInvestmentTypeAxis = prk_AccruingFinancingReceivableModificationsMember |
Nonaccrual [Member] |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Loans modified during period |  | $ 2,400,000 prk_FinancingReceivableModificationsAggregateAmountOfLoansModifiedDuringPeriod / prk_TroubledDebtRestructuringRecordedInvestmentTypeAxis = prk_NonaccruingFinancingReceivableModificationsMember |

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