Capital City Bank Group, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

INVESTMENT SECURITIES (Narrative) (Details)

INVESTMENT SECURITIES (Narrative) (Details)	3 Months Ended		9 Months Ended
INVESTMENT SECURITIES (Narrative) (Details)	Sep. 30, 2026 USD ($) Investment_Positions Item	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) Investment_Positions Item	Sep. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
Schedule of Available-for-sale Securities [Line Items]
AFS allowance for credit loss	$ 49,000		$ 49,000		$ 42,000
Equity Securities	3,203,000		3,203,000		2,069,000
Securities pledged to secure public deposits	605,500,000		605,500,000		461,300,000
Sales of investment securities	0	$ 0	0	$ 0
Securities held nonaccrual status	$ 0		$ 0
AFS and HTM [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total \| Investment_Positions	848		848
Available-for-sale Securities and Held-To-Maturity, Continuous Unrealized Loss Position Fair Value, Total	$ 52,300,000		$ 52,300,000
U.S. Government Treasury Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total \| Item	91		91
AFS allowance for credit loss	$ 0		$ 0		0
U.S. Government Agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total \| Investment_Positions	688		688
AFS allowance for credit loss	$ 0		$ 0		0
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
AFS allowance for credit loss	$ 49,000		$ 49,000		$ 42,000
Municipal and corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities and Held-to-maturity investments in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Total \| Item	69		69