DERIVATIVES AND HEDGING (Derivatives Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	$ 28,821	$ 37,119
Liability Derivatives, Fair Value	50,605	63,634
Derivative Assets, Amounts offsett in the Statement of Financial Condition	(13,479)	(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	$ (8,268)	$ (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	$ 463,857	$ 474,502
Liability Derivatives, Notional/Contract Amount	507,447	503,381
Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	15,876	19,481
Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	29,079	37,335
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	28,821	37,119
Liability Derivatives, Fair Value	50,605	63,634
Derivative Assets, Amounts offsett in the Statement of Financial Condition	(13,479)	(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	21,747	26,485
Interest rate swaps [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	429,876	440,731
Liability Derivatives, Notional/Contract Amount	429,876	440,731
Interest rate swaps [Member] \| Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	28,821	37,119
Interest rate swaps [Member] \| Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	28,858	37,150
Loan Participations and Assignments \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	1,225	1,283
Liability Derivatives, Notional/Contract Amount	46,948	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	85	67
Mortgage loan commitments [Member] \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Notional/Contract Amount	31,296	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	485	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	1,460	16,568
Liability Derivatives, Notional/Contract Amount	30,623	3,000
Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member] \| Other assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair Value	49	61
Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member] \| Other liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives, Fair Value	$ 136	$ 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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Indicates line item in statement of financial position that includes 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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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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