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Deposits - Maturities of Time Deposits (Details) - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014
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Time Deposits, $250,000 or more | $ 49.7 | $ 64.7

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- Definition Time Deposits, $250,000 or more + References No definition available. + Details
Name: | prk_TimeDeposits250000ormore
Namespace Prefix: | prk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant