LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Narratives) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans Held for Investment and Allowance for Credit Losses [Abstract]
Accrued interest receivable	$ 10,100,000	$ 8,000,000.0
Real estate loans for which formal foreclosure proceedings were in process	500,000	600,000
TDRs	0
Financing Receivable, Allowance for Credit Loss	29,941,000	25,068,000	$ 21,606,000	$ 23,816,000
Increase (decrease) in allowance	4,900,000	3,500,000
Provision For Loan Losses Expensed	9,595,000	7,397,000	(2,842,000)
Net loan charge-offs or (recoveries)	4,722,000	3,935,000	$ (632,000)
Net deferred costs	7,800,000	5,100,000
Capital City Home Loans [Member]
Payments to purchase mortgage loans held for sale	$ 364,800,000	421,700,000
Third Party [Member]
Purchase of real estate secured adjustable rate loans		$ 15,000,000.0