XML 93 R9.htm IDEA: XBRL DOCUMENT
v3.19.1

Consolidated Statements Of Cash Flows (Parenthetical) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($)
Farmers Deposit Bancorp, Inc. [Member] |
Business Acquisition [Line Items] |
Cash Acquired from Acquisition | $ 4,209
Poage Bankshares, Inc. [Member] |
Business Acquisition [Line Items] |
Cash Acquired from Acquisition | $ 34,288

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

X
- Definition The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
Name: | us-gaap_CashAcquiredFromAcquisition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=chco_FarmersDepositBancorpInc.Member
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: |