Document And Entity Information	3 Months Ended
	Mar. 31, 2012	May 03, 2012
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Entity Registrant Name	PARK NATIONAL CORP /OH/
Trading Symbol	prk
Entity Central Index Key	0000805676
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		15,405,902