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DERIVATIVES AND HEDGING ACTIVITIES - Classification on Consolidated Statements of Financial Condition (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($) DerivativeInstrument	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) DerivativeInstrument	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($) DerivativeInstrument
Cash Flow Hedges
Collateral received against obligations in net asset position	$ 6,200		$ 6,200		$ 9,100
Not Designated as Hedging Instrument
Cash Flow Hedges
Loan level derivative income	$ 942	$ 1,085	$ 1,003	$ 1,491
Loan level interest rate swaps with borrower (assets) \| Not Designated as Hedging Instrument
Cash Flow Hedges
Count, assets \| DerivativeInstrument	62		62		23
Notional amount, assets	$ 700,636		$ 700,636		$ 321,745
Fair value assets	$ 14,193		$ 14,193		$ 3,704
Loan level interest rate swaps with borrower (liabilities) \| Not Designated as Hedging Instrument
Cash Flow Hedges
Count, liabilities \| DerivativeInstrument	158		158		202
Notional amount, liabilities	$ 975,436		$ 975,436		$ 1,344,204
Fair value liabilities	(71,496)		(71,496)		$ (104,474)
Collateral already posted, aggregate fair value	0		0
Loan level interest rate swaps with third party counterparties (assets)
Cash Flow Hedges
Collateral already posted, aggregate fair value	$ 1,400		$ 1,400
Loan level interest rate swaps with third party counterparties (assets) \| Not Designated as Hedging Instrument
Cash Flow Hedges
Count, assets \| DerivativeInstrument	158		158		202
Notional amount, assets	$ 975,436		$ 975,436		$ 1,344,204
Fair value assets	71,496		71,496		104,474
Collateral received against obligations in net asset position	$ 63,600		$ 63,600		$ 103,300
Loan level interest rate swaps with third party counterparties (liabilities) \| Not Designated as Hedging Instrument
Cash Flow Hedges
Count, liabilities \| DerivativeInstrument	62		62		23
Notional amount, liabilities	$ 700,636		$ 700,636		$ 321,745
Fair value liabilities	$ (14,193)		$ (14,193)		$ (3,704)