Capital City Bank Group, Inc. Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS - Narrative 2 (Details)

EMPLOYEE BENEFIT PLANS - Narrative 2 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Mar. 01, 2020
Defined Benefit Plan Disclosure [Line Items]
Interest in CCHL subsidiary entity	51.00%			51.00%
Minimum [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation (in percent)	55.00%
Minimum [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation (in percent)	17.00%
Minimum [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation (in percent)	0.00%
Maximum [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation (in percent)	81.00%
Maximum [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation (in percent)	37.00%
Maximum [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target Allocation (in percent)	10.00%
Employee Benefit 401 K Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching contributions (in percent)	50.00%
Participant's compensation for eligible associates (in percent)	6.00%
Matching contributions	$ 0.8	$ 0.7	$ 0.6
Shares reserved for issuance (in shares)	50,000
Additional Employers Contribution for Associates Hired After Year 2019 as a percentage of compensation	3.00%
Employee Benefit 401 K Plan [Member] \| CCHL associates [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching contributions	$ 0.5
Employee Benefit 401 K Plan [Member] \| Maximum [Member] \| CCHL associates [Member]
Defined Benefit Plan Disclosure [Line Items]
Matching contributions (in percent)	3.00%
Dividend Reinvestment and Optional Stock Purchase Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Shares reserved for issuance (in shares)	250,000