SECURITIES (Securities Pledged) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Pledged Financial Instruments, Not Separately Reported, Securities [Abstract]
Securities pledged for State and Local Government Public Deposits, Carrying Value	$ 137,911
Securities pledged for Interest Rate Swap Counterparties, Carrying Value	21,849
Securities pledged for Repurchase Agreements, Carrying Value	151,110
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities	2,702
Total pledged securities, Carrying Value	313,572
Securities pledged for State and Local Government public deposits, Amortized Cost	137,163
Securities pledged for Interest Rate Swap Counterparties, Amortized Cost	21,427
Securities pledged for Repurchase Agreements, Amortized Cost	149,253
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities, Amortized Cost	2,702
Total pledged securities, Amortized Cost	310,545
Securities pledged for State and Local Government Public Deposits, Fair Value	141,588
Securities pledged for Interest Rate Swap Counterparties, Fair Value	22,077
Securities pledged for Retail Repurchase Agreements, Fair Value	151,110
Pledged Financial Instruments, Not Separately Reported, Interest-bearing Deposits for Other Debt Facilities, Fair Value	2,699
Total pledged securities, Fair Value	$ 317,474