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DERIVATIVES AND HEDGING (Derivatives Designated as Hedging, by Balance Sheet Location) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Fair Value | $ 43,821 | $ 37,119
Liability Derivatives, Fair Value | 65,032 | 63,634
Derivative Assets, Amounts offsett in the Statement of Financial Condition | (20,012) | (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 | $ 918 | $ 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 | $ 487,865 | $ 474,502
Liability Derivatives, Notional/Contract Amount | 481,942 | 503,381
Not Designated as Hedging Instrument [Member] | Other assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Fair Value | 24,147 | 19,481
Not Designated as Hedging Instrument [Member] | Other liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives, Fair Value | 45,982 | 37,335
Interest rate swaps [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Fair Value | 43,821 | 37,119
Liability Derivatives, Fair Value | 65,032 | 63,634
Derivative Assets, Amounts offsett in the Statement of Financial Condition | (20,012) | (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 | 21,166 | 26,485
Interest rate swaps [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Notional/Contract Amount | 431,935 | 440,731
Liability Derivatives, Notional/Contract Amount | 431,935 | 440,731
Interest rate swaps [Member] | Not Designated as Hedging Instrument [Member] | Other assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Fair Value | 43,821 | 37,119
Interest rate swaps [Member] | Not Designated as Hedging Instrument [Member] | Other liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives, Fair Value | 43,866 | 37,150
Loan Participations and Assignments | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Notional/Contract Amount | 1,108 | 1,283
Liability Derivatives, Notional/Contract Amount | 45,639 | 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 | 19 | 67
Mortgage loan commitments [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Notional/Contract Amount | 26,278 | 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 | 102 | 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 | 28,544 | 16,568
Liability Derivatives, Notional/Contract Amount | 4,368 | 3,000
Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Asset Derivatives, Fair Value | 236 | 61
Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Liability Derivatives, Fair Value | $ 25 | $ 76

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