COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Commitment And Contingencies [Line Items]
Rental expense	$ 2.7	$ 2.5	$ 2.4
Commitments to Extend Credit [Member]
Commitment And Contingencies [Line Items]
Commitments to extend credit	684.2	629.0
Standby Letters of Credit [Member]
Commitment And Contingencies [Line Items]
Commitments to extend credit	12.7	$ 17.1
SBIC [Member]
Commitment And Contingencies [Line Items]
Unfunded commitment for investment	$ 2.2