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SECURITIES (Securities Pledged) (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	$ 616,963
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	630,460
Pledged Financial Instruments, Not Separately Reported, Fair Value	522,885
Asset Pledged as Collateral without Right | Securities For State and Local Government Public Deposits
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	236,190
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	249,687
Pledged Financial Instruments, Not Separately Reported, Fair Value	212,629
Asset Pledged as Collateral without Right | Securities For Federal Reserve
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	113,447
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	113,447
Pledged Financial Instruments, Not Separately Reported, Fair Value	95,027
Asset Pledged as Collateral without Right | Securities for Interest Rate Swap Counterparties
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	968
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	968
Pledged Financial Instruments, Not Separately Reported, Fair Value	795
Asset Pledged as Collateral without Right | Securities Sold under Agreements to Repurchase
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	264,034
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	264,034
Pledged Financial Instruments, Not Separately Reported, Fair Value	212,319
Asset Pledged as Collateral without Right | Interest Bearing Deposits for Other Debt Facilities
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	2,324
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	2,324
Pledged Financial Instruments, Not Separately Reported, Fair Value	$ 2,115

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