SHORT-TERM BORROWINGS - Contractual Maturity of Repurchase Agreements (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Remaining Contractual Maturity of the Agreements
Short-term borrowings	$ 145,926	$ 153,349
Repurchase Agreements
Remaining Contractual Maturity of the Agreements
Short-term borrowings	3,631	5,153
Overnight and Continuous
Remaining Contractual Maturity of the Agreements
Securities borrowed, gross including not subject to master netting arrangement	7,976	7,165
Overnight and Continuous | State and political securities
Remaining Contractual Maturity of the Agreements
Securities borrowed, gross including not subject to master netting arrangement	7,976	6,193
Overnight and Continuous | Other debt securities
Remaining Contractual Maturity of the Agreements
Securities borrowed, gross including not subject to master netting arrangement	$ 0	$ 972