XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Allowance For Loan Losses (Schedule Of Credit Quality Indicators) (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total | $ 2,957,912 | $ 2,862,534
Commercial Industrial Loans And Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,334,475 | 1,292,921
Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 176,387 | 165,340
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,158,088 | 1,127,581
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,272,722 | 1,227,170
Pass [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 167,493 | 156,664
Pass [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,105,229 | 1,070,506
Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 16,978 | 25,041
Special Mention [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 2,027 | 4,099
Special Mention [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 14,951 | 20,942
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 44,775 | 40,672
Substandard [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 6,867 | 4,539
Substandard [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 37,908 | 36,133
Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 0 | 38
Doubtful [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 0 | 38
Doubtful [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | $ 0 | $ 0

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_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=chco_CommercialIndustrialLoansAndCommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |