DERIVATIVES AND HEDGING ACTIVITIES - Effect of fair value and cash flow hedge accounting on the consolidated statements of operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Interest Income
DERIVATIVES AND HEDGING ACTIVITIES
Effects of fair value or cash flow hedges are recorded	$ 561
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest and Dividend Income, Operating
Interest Expense
DERIVATIVES AND HEDGING ACTIVITIES
Effects of fair value or cash flow hedges are recorded	$ 2,275
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense.
Interest Rate Products | Interest Income
DERIVATIVES AND HEDGING ACTIVITIES
Change in unrealized gain (loss) on hedged item	$ 6,591
Interest Rate Products | Designated as Hedging Instrument | Fair value hedges
DERIVATIVES AND HEDGING ACTIVITIES
Effects of fair value or cash flow hedges are recorded	$ (6,030)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest and Dividend Income, Operating
Interest Rate Products | Designated as Hedging Instrument | Cash flow hedges
DERIVATIVES AND HEDGING ACTIVITIES
Cash flow hedging relationships gain (loss) reclassified from AOCI into income	$ 2,275	$ 1,134
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense.	Interest Expense.