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Loans (Recorded Investment In Financing Receivable Modified As TDR Within 12 Months) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 contracts | Jun. 30, 2012 contracts
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 38 | 46
Recorded Investment | $ 14,943 | $ 16,950
Commercial, Financial And Agricultural [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 6 | 9
Recorded Investment | 6,546 | 6,786
SEPH Commercial Land and Development [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 3 | 3
Recorded Investment | 639 | 639
Construction Real Estate - Remaining Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 4 | 7
Recorded Investment | 3,267 | 4,699
Residential Real Estate - Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 6 | 6
Recorded Investment | 1,626 | 1,626
Residential Real Estate - Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 9 | 11
Recorded Investment | 830 | 1,165
Residential Real Estate - HELOC [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 1 | 1
Recorded Investment | 46 | 46
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 7 | 7
Recorded Investment | 1,820 | 1,820
Construction Real Estate - Mortgage [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | 0 |
Construction Real Estate - Installment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | 0 |
Residential Real Estate - Installment [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 2 | 2
Recorded Investment | 169 | 169
Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | 0 |
Finance Leases Financing Receivable [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Number of Contracts | 0 | 0
Recorded Investment | $ 0 |

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- Definition Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period + References No definition available. + Details
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Namespace Prefix: | prk_
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- Definition Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period + References No definition available. + Details
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Namespace Prefix: | prk_
Data Type: | xbrli:monetaryItemType
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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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Period Type: | duration