Capital Ratios (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
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	0.0834	0.0858
Tier One Risk Based Capital to Risk Weighted Assets	0.1069	0.1105
Common Equity Tier 1	0.1069	0.1105
Capital to Risk Weighted Assets	0.1215	0.1256
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	$ 516,562	$ 485,139
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	$ 635,769	$ 597,094
Capital Required to be Well Capitalized	794,711	746,368
Tier One Risk Based Capital	849,886	825,045
Tier One Risk Based Capital Required for Capital Adequacy	476,827	447,821
Tier One Risk Based Capital Required to be Well Capitalized	635,769	597,094
Tier One Leverage Capital	849,886	825,045
Tier One Leverage Capital Required for Capital Adequacy	407,836	384,582
Tier One Leverage Capital Required to be Well Capitalized	509,795	480,728
Common Equity Tier One Capital	849,886	825,045
Common Equity Tier One Capital Required for Capital Adequacy	$ 357,620	$ 335,866
Banking Regulation, Common Equity Tier One Risk-Based Capital Ratio, Well Capitalized, Minimum	0.0650	0.0650
Banking Regulation, Total Capital, Actual	$ 965,470	$ 937,438
Park
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital to Average Assets	0.0990	0.0977
Tier One Risk Based Capital to Risk Weighted Assets	0.1276	0.1257
Common Equity Tier 1	0.1257	0.1237
Capital to Risk Weighted Assets	0.1607	0.1605
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	$ 639,102	$ 599,102
Capital Required to be Well Capitalized	798,877	748,878
Tier One Risk Based Capital	1,019,149	941,536
Tier One Risk Based Capital Required for Capital Adequacy	479,326	449,327
Tier One Risk Based Capital Required to be Well Capitalized	479,326	449,327
Tier One Leverage Capital	1,019,149	941,536
Tier One Leverage Capital Required for Capital Adequacy	411,838	385,313
Common Equity Tier One Capital	1,004,149	926,536
Common Equity Tier One Capital Required for Capital Adequacy	359,495	336,995
Banking Regulation, Total Capital, Actual	$ 1,283,409	$ 1,202,225