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Consolidated Condensed Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Statement of Comprehensive Income [Abstract] |  |  |  |
Unrealized net holding (loss) gain on securities available-for-sale, Tax expense | $ (1,174) | $ 3,528 | $ 7,459 | $ 3,328

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- Definition Other Comprehensive Income Loss Available For Sale Securities Including Reclassification Adjustment Tax + References No definition available. + Details
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Namespace Prefix: | prk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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