XML 132 R105.htm IDEA: XBRL DOCUMENT v2.4.0.8

Employee Benefit Plans (Restricted Shares Activity And Related Information) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation [Abstract]
Restricted Awards, beginning balance	116,711	108,209	96,060
Restricted Awards, Granted	35,083	23,336	14,050
Restricted Awards, Forfeited/Vested	(9,325)	(14,834)	(1,901)
Restricted Awards, ending balance	142,469	116,711	108,209
Average Market Price at Grant, Granted	$ 38.07	$ 34.94	$ 35.08

X

- Definition

Restricted shares average market price at grant.

+ References

No definition available.

+ Details

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Namespace Prefix:	chco_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Restricted Stock Shares Outstanding

+ References

No definition available.

+ Details

Name:	chco_RestrictedStockSharesOutstanding
Namespace Prefix:	chco_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Stock issued during period, shares, restricted stock award, granted.

+ References

No definition available.

+ Details

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Namespace Prefix:	chco_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ShareBasedCompensationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares related to Restricted Stock Award forfeited during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration