Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 26, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Entity Registrant Name	PARK NATIONAL CORP /OH/
Entity Central Index Key	0000805676
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		15,350,817