INVESTMENT SECURITIES (Details 1) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less, Amortized Cost	$ 9,947
Due from one year to five years, Amortized Cost	63,050
Due from five to ten years, Amortized Cost	65,834
Due after ten years, Amortized Cost	54,078
Mortgage-backed Securities, Amortized Cost	640,055
Amortized Cost	832,964	$ 824,635
Due in one year or less,Fair Value	10,075
Due from one year to five years, Fair Value	63,720
Due from five to ten years, Fair Value	67,069
Due after ten years, Fair Value	54,609
Mortgage-backed securities, Fair Value	635,292
Total Fair Value	$ 830,765	$ 822,735