BORROWINGS - Summary of Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Federal funds purchased	$ 30,000	$ 0
Securities sold under repurchase agreements	124,894	157,280
Federal Home Loan Bank advances	832,629	712,852
Subordinated debentures and other borrowings	93,562	158,644
Total Borrowings	$ 1,081,085	$ 1,028,776