XML 68 R57.htm IDEA: XBRL DOCUMENT v3.23.2

Accumulated Other Comprehensive (Loss) Income (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity [Abstract]
Combined Federal and State income tax rate (percent)	24.00%	24.00%	24.00%	24.00%

X

- Definition

Combined Federal And State Income Tax Rate

+ References

No definition available.

+ Details

Name:	chco_CombinedFederalAndStateIncomeTaxRate
Namespace Prefix:	chco_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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