BORROWINGS - Summary of Borrowings (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Federal funds purchased	$ 147,229	$ 0
Securities sold under repurchase agreements	100,451	157,280
Federal Home Loan Bank advances	832,703	712,852
Subordinated debentures and other borrowings	93,589	158,644
Total Borrowings	$ 1,173,972	$ 1,028,776