BUSINESS COMBINATION - Schedule of Assets and Liabilities Acquired (Details) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Dec. 01, 2025	Apr. 01, 2025	Dec. 31, 2025	Dec. 31, 2024	Nov. 28, 2025	Dec. 31, 2023
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill [Abstract]
Cash consideration paid			$ 3,500	$ 0
Liabilities assumed at fair value:
Goodwill			$ 63,873	$ 48,923		$ 48,923
TC Bancshares, Inc
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill [Abstract]
Shares of CBAN common stock issued to TCBC shareholders (in shares)	3,839,613
Market price of CBAN common stock (in dollars per share)					$ 17.15
Estimated fair value of CBAN common stock issued	$ 65,850
Cash consideration paid	15,430
Total consideration	81,280
Assets acquired at fair value:
Cash and cash equivalents	16,346
Investment securities, available-for-sale	93,485
Loans	412,676
Allowance for credit losses	(4,619)
Premises and equipment	1,615
Core deposit intangible	4,622
Prepaid and other assets	31,066
Total fair value of assets acquired	555,191
Liabilities assumed at fair value:
Deposits	460,119
FHLB advances	9,969
Payables and other liabilities	16,825
Total fair value of liabilities assumed	486,913
Net assets acquired at fair value	68,278
Goodwill	$ 13,002
Ellerbee Agency
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill [Abstract]
Total consideration		$ 3,500
Assets acquired at fair value:
Core deposit intangible		1,400
Liabilities assumed at fair value:
Goodwill		$ 1,900