COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES (Summary of Contractual and Notional Amounts of FInancial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial Instruments [Line Items]
Contractual Amounts Of Financial Instrument	$ 700,941	$ 728,721
Commitments to Extend Credit [Member]
Financial Instruments [Line Items]
Contractual Amounts Of Financial Instrument	696,086	723,986
Standby Letters of Credit [Member]
Financial Instruments [Line Items]
Contractual Amounts Of Financial Instrument	$ 4,855	$ 4,735