SECURITIES, By Contractual Maturity (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Due in one year or less	$ 8,293
Due after one year through five years	15,818
Due after five years through ten years	8,172
Due after ten years	4,417
Amortized cost	355,998		$ 370,607
Fair value of available-for-sale securities by contractual maturity [Abstract]
Due in one year or less	8,299
Due after one year through five years	16,165
Due after five years through ten years	8,501
Due after ten years	4,706
Fair value	360,715		365,731
Sales of securities	0	$ 0
Corporate Preferred Securities [Member]
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	500
Fair value of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	500
Mortgage-backed Securities of Government Sponsored Enterprises [Member]
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	318,798
Amortized cost	318,798		328,806
Fair value of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	322,544
Fair value	$ 322,544		$ 323,785