SECURITIES (Securities Pledged) (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Schedule of Pledged Financial Instruments, Not Separately Reported [Line Items]
Pledged Financial Instruments, Not Separately Reported, Carrying Value	$ 641,398
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	658,436
Pledged Financial Instruments, Not Separately Reported, Fair Value	517,649
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	251,566
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	268,603
Pledged Financial Instruments, Not Separately Reported, Fair Value	214,868
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	116,703
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	116,704
Pledged Financial Instruments, Not Separately Reported, Fair Value	93,257
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	974
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	974
Pledged Financial Instruments, Not Separately Reported, Fair Value	755
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	269,808
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	269,808
Pledged Financial Instruments, Not Separately Reported, Fair Value	206,692
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	2,347
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	2,347
Pledged Financial Instruments, Not Separately Reported, Fair Value	$ 2,077