SUMMARY OF ORGANIZATION (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended						9 Months Ended
	Oct. 23, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Jul. 29, 2024	May 17, 2024	Dec. 31, 2023	Dec. 31, 2022
Organization [Line Items]
Common stock, par value (in dollars per share)		$ 1						$ 1			$ 1.00	$ 1
Total assets		$ 7,966,455						$ 7,966,455				$ 7,999,345
Loans, excluding loans held for sale								5,263,000
Deposits		6,560,712						6,560,712				6,462,872
Stockholders' Equity Attributable to Parent		1,011,683	$ 971,885	$ 959,912	$ 897,221	$ 899,446	$ 896,427	1,011,683	$ 897,221			$ 949,034	$ 646,663
Net income		$ 18,571	$ 19,697	$ 20,628	$ 24,360	$ 23,779	$ 16,271	$ 58,896	$ 64,410
Dividends on common stock, per share (in dollars per share)		$ 0.25	$ 0.25	$ 0.25
Dividends declared (in dollars per share)		$ 0.25	$ 0.25	$ 0.25	$ 0.23	$ 0.22	$ 0.21
Subsequent Event
Organization [Line Items]
Dividends declared (in dollars per share)	$ 0.25
Merger Agreement With Renasant Corporation
Organization [Line Items]
Merger agreement, share conversion (in shares)										1.00