DERIVATIVES AND HEDGING (Derivatives Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 35,660	$ 37,119
Liability Derivatives, Fair Value	59,880	63,634
Derivative Assets, Amounts offsett in the Statement of Financial Condition	(16,664)	(17,780)
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash, Offset Against Derivative Asset	0	0
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset	$ (6,439)	$ (8,705)
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	$ 484,558	$ 474,502
Liability Derivatives, Notional/Contract Amount	474,965	503,381
Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	19,345	19,481
Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	36,831	37,335
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	35,660	37,119
Liability Derivatives, Fair Value	59,880	63,634
Derivative Assets, Amounts offsett in the Statement of Financial Condition	(16,664)	(17,780)
Interest rate swaps [Member] \| Designated as Hedging Instrument [Member] \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	0	0
Liability Derivatives, Notional/Contract Amount	400,000	400,000
Interest rate swaps [Member] \| Designated as Hedging Instrument [Member] \| Other assets [Member] \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	0	0
Interest rate swaps [Member] \| Designated as Hedging Instrument [Member] \| Other liabilities [Member] \| Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	24,198	26,485
Interest rate swaps [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	426,710	440,731
Liability Derivatives, Notional/Contract Amount	426,710	440,731
Interest rate swaps [Member] \| Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	35,660	37,119
Interest rate swaps [Member] \| Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	35,682	37,150
Loan Participations and Assignments \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	1,167	1,283
Liability Derivatives, Notional/Contract Amount	45,979	47,283
Loan Participations and Assignments \| Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	0	0
Loan Participations and Assignments \| Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	52	67
Mortgage loan commitments [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	24,671	15,920
Liability Derivatives, Notional/Contract Amount	0	12,367
Mortgage loan commitments [Member] \| Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	270	81
Mortgage loan commitments [Member] \| Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	0	42
Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	32,010	16,568
Liability Derivatives, Notional/Contract Amount	2,276	3,000
Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	79	61
Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 2	$ 76

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Nominal or face amount used to calculate payments on the derivative asset.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.

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Nominal or face amount used to calculate payments on the derivative liability.

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Indicates line item in statement of financial position that includes derivative liability.

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