XML 131 R111.htm IDEA: XBRL DOCUMENT
v3.20.4

Derivatives Statements of financial performance and financial position (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Derivative [Line Items] |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ 885 | $ 575
Borrowing Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 25,000 | 25,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 885 | 575
Loan Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 33,310 | 35,503
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 | 0
Other Assets [Member] | Borrowing Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 0 | 0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 | 0
Other Assets [Member] | Loan Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 33,310 | 24,421
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | (3,934) | (1,781)
Other Assets [Member] | Loan Derivative [Member] | Individually Immaterial Counterparties [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 0 | 11,083
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 | (89)
Other Assets [Member] | Interest Rate Swap [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 33,310 | 35,504
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | (3,934) | (1,870)
Other Liabilities [Member] | Borrowing Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 25,000 | 25,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 885 | 575
Other Liabilities [Member] | Loan Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 0 | 11,083
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 | 89
Other Liabilities [Member] | Loan Derivative [Member] | Individually Immaterial Counterparties [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 33,310 | 24,421
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 3,934 | 1,781
Other Liabilities [Member] | Interest Rate Swap [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 58,310 | 60,504
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ 4,819 | $ 2,445

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of unrealized gain (loss) related to derivatives designated as cash flow hedging instruments, recorded in results of operations to the extent that the cash flow hedge is determined to be ineffective. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624171-113959 + Details
Name: | us-gaap_UnrealizedGainLossOnCashFlowHedgingInstruments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=prk_BorrowingDerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=prk_LoanDerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=us-gaap_IndividuallyImmaterialCounterpartiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |