SECURITIES, By Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Due in one year or less	$ 7,115
Due after one year through five years	17,036
Due after five years through ten years	3,967
Due after ten years	4,409
Amortized cost	342,645	$ 370,607
Fair value of available-for-sale securities by contractual maturity [Abstract]
Due in one year or less	7,123
Due after one year through five years	17,449
Due after five years through ten years	4,156
Due after ten years	4,754
Fair value	347,811	365,731
Mortgage-backed Securities of Government Sponsored Enterprises [Member]
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	310,118
Amortized cost	310,118	328,806
Fair value of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	314,329
Fair value	$ 314,329	$ 323,785

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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