DERIVATIVE INSTRUMENTS - Amounts and Locations of Activity Related to Interest Rate Swaps Designated as Cash Flow Hedges within Corporation's Consolidated Balance Sheet and Statement of Income (Details) - Interest Rate Swaps - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Derivative [Line Items]
Interest rate contracts	$ (31)	$ 110	$ (68)	$ 322
Interest expense – subordinated notes and debentures
Derivative [Line Items]
Other income	(51)	(51)	(96)	(118)
Other income
Derivative [Line Items]
Other income	0	$ 0	0	$ 0
Accrued interest receivable (payable) and other assets ( liabilities)
Derivative [Line Items]
Accrued interest receivable (payable) and other assets ( liabilities)	$ 65		$ 65		$ 150