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

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- Definition

Time Deposits, $250,000 or more

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No definition available.

+ Details

Name:	prk_TimeDeposits250000ormore
Namespace Prefix:	prk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant