INCOME TAXES - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Loss Carryforwards [Line Items]
Statutory percentage rate of provision	21.00%
Deferred income tax asset (liability) allocated to unrealized net gain (loss) on securities available-for-sale	$ 41,100,000	$ 50,000,000.0
Deferred income tax asset allocated to pension plan and SERP	243,000	255,000
Unrecognized tax benefits	0	0
Interest and penalties related to unrecognized tax benefits	0	$ 0	$ 0
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 20,000,000