Capital Ratios (Details) $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Banking Regulation, Capital Conservation Buffer, Capital Conserved, Minimum	0.0250
Park National Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital to Average Assets	0.0911	0.0834
Tier One Risk Based Capital to Risk Weighted Assets	0.1095	0.1069
Common Equity Tier 1	0.1095	0.1069
Capital to Risk Weighted Assets	0.1235	0.1215
Leverage Capital Required For Capital Adequacy To Average Total Assets	0.0400	0.0400
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	0.0600	0.0600
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.0450	0.0450
Capital Required for Capital Adequacy to Risk Weighted Assets	0.0800	0.0800
Common Equity Tier One Capital Required to be Well-Capitalized	$ 529,043	$ 516,562
Leverage Capital Required To Be Well Capitalized To Average Total Assets	0.0500	0.0500
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	0.0800	0.0800
Capital Required to be Well Capitalized to Risk Weighted Assets	0.1000	0.1000
Capital Required for Capital Adequacy	$ 651,130	$ 635,769
Capital Required to be Well Capitalized	813,913	794,711
Tier One Risk Based Capital	891,363	849,886
Tier One Risk Based Capital Required for Capital Adequacy	488,348	476,827
Tier One Risk Based Capital Required to be Well Capitalized	651,130	635,769
Tier One Leverage Capital	891,363	849,886
Tier One Leverage Capital Required for Capital Adequacy	391,376	407,836
Tier One Leverage Capital Required to be Well Capitalized	489,220	509,795
Common Equity Tier One Capital	891,363	849,886
Common Equity Tier One Capital Required for Capital Adequacy	$ 366,261	$ 357,620
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum	0.0650	0.0650
Banking Regulation, Total Capital, Actual	$ 1,005,211	$ 965,470
Park
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital to Average Assets	0.1074	0.0990
Tier One Risk Based Capital to Risk Weighted Assets	0.1297	0.1276
Common Equity Tier 1	0.1279	0.1257
Capital to Risk Weighted Assets	0.1619	0.1607
Leverage Capital Required For Capital Adequacy To Average Total Assets	0.0400	0.0400
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	0.0600	0.0600
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Capital Adequacy, Minimum	0.0450	0.0450
Capital Required for Capital Adequacy to Risk Weighted Assets	0.0800	0.0800
Leverage Capital Required For Capital Adequacy plus capital conservation buffer To Average Total Assets	4.00%	4.00%
Tier One Risk Based Capital Required For Capital Adequacy plus capital conservation buffer To Average Total Assets	8.50%	8.50%
Common Equity Tier 1 Capital Required For Capital Adequacy plus capital conservation buffer To Average Total Assets	7.00%	7.00%
Capital Required For Capital Adequacy plus capital conservation buffer To Average Total Assets	10.50%	10.50%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	0.0600	0.0600
Capital Required to be Well Capitalized to Risk Weighted Assets	0.1000	0.1000
Capital Required for Capital Adequacy	$ 654,197	$ 639,102
Capital Required to be Well Capitalized	817,747	798,877
Tier One Risk Based Capital	1,060,593	1,019,149
Tier One Risk Based Capital Required for Capital Adequacy	490,648	479,326
Tier One Risk Based Capital Required to be Well Capitalized	490,648	479,326
Tier One Leverage Capital	1,060,593	1,019,149
Tier One Leverage Capital Required for Capital Adequacy	395,131	411,838
Common Equity Tier One Capital	1,045,593	1,004,149
Common Equity Tier One Capital Required for Capital Adequacy	367,986	359,495
Banking Regulation, Total Capital, Actual	$ 1,323,588	$ 1,283,409