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DERIVATIVES AND HEDGING ACTIVITIES - Master Netting Agreements (Details) - USD ($)
Sep. 30, 2023
Dec. 31, 2022
Derivative Asset [Abstract]    
Derivative assets, Gross fair value $ 15,520,000 $ 13,763,000
Derivative assets, Netting adjustments/Cash collateral (14,908,000) (12,870,000)
Derivative assets, Carrying value 612,000 893,000
Derivative Liability [Abstract]    
Derivative liabilities, Gross fair value (15,185,000) (13,280,000)
Derivative liabilities, Netting adjustments/Cash collateral (245,000) 101,000
Derivative liabilities, Carrying Value (15,430,000) (13,179,000)
Liability for cash collateral received from counterparties 15,200,000 12,800,000
Concentration of credit risk, master netting arrangements    
Derivative Liability [Abstract]    
Liability for cash collateral received from counterparties $ 15,200,000 $ 12,800,000