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INVESTMENT SECURITIES (Amortized Cost and Estimated Fair Values of Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]    
Available for sale, Amortized Cost, Total   $ 198,670
Securities Pledged as Collateral [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Available for sale, Amortized Cost, Total $ 99,729 131,035
Available-for-sale, Pledged available-for-sale securities, Estimated Fair Value $ 97,170 $ 129,880