INVESTMENT SECURITIES, Contractual and Expected Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Maturity in years [Abstract]
Due in one year or less	$ 37,748
Due after one year through five years	51,955
Due after five years through ten years	5,097
Due after ten years	4,935
Subtotal	99,735
MBS & CMO	202,266
Amortized cost	302,001	$ 320,062
Maturity in years [Abstract]
Due in one year or less	37,645
Due after one year through five years	52,120
Due after five years through ten years	5,303
Due after ten years	4,980
Subtotal	100,048
MBS & CMO	198,601
Estimated fair value	$ 298,649	$ 314,637