DERIVATIVES AND HEDGING ACTIVITIES - Fair value and cash flow hedge accounting on the consolidated statements of financial condition (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Risk participations
DERIVATIVES AND HEDGING ACTIVITIES
Notional amount, liabilities	$ 141,100	$ 93,900
Designated as Hedging Instrument | Fair value hedges | Interest rate products
DERIVATIVES AND HEDGING ACTIVITIES
Notional amount, liabilities	500,000	500,000
Fair Value Liabilities		6,594
Designated as Hedging Instrument | Cash flow hedges | Interest rate products
DERIVATIVES AND HEDGING ACTIVITIES
Notional amount, assets	150,000	150,000
Notional amount, liabilities	350,000	200,000
Fair Value Assets	8,318	12,492
Fair Value Liabilities	159	5,031
Not Designated as Hedging Instrument | Interest rate products
DERIVATIVES AND HEDGING ACTIVITIES
Notional amount, assets	1,665,949	1,682,961
Notional amount, liabilities	1,665,949	1,682,961
Fair Value Assets	108,178	114,671
Fair Value Liabilities	108,178	114,671
Not Designated as Hedging Instrument | Risk participations
DERIVATIVES AND HEDGING ACTIVITIES
Notional amount, liabilities	141,080	93,891
Fair Value Liabilities	$ 10	$ 24