XML 109 R94.htm IDEA: XBRL DOCUMENT
v3.22.4

Employee Benefit Plans (Summary of Pentegra Plans) (Details) - Pentegra Defined Benefit Plan for Financial Institutions | Dec. 31, 2022
--- | ---
Classic Bancshares, Inc. [Domain] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Defined Benefit Plan, Funded Percentage | 88.26%
Poage Bankshares, Inc. |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Defined Benefit Plan, Funded Percentage | 86.39%

X
- Definition Percentage of plan assets to benefit obligation of defined benefit plan. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanFundedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chco_ClassicBancsharesInc.Domain
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=chco_PentegraDefinedBenefitPlanforFinancialInstitutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chco_PoageBanksharesInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |