INVESTMENT SECURITIES (Details 1) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less, Amortized Cost	$ 4,829
Due from one year to five years, Amortized Cost	60,389
Due from five to ten years, Amortized Cost	52,279
Due after ten years, Amortized Cost	60,157
Mortgage-backed Securities, Amortized Cost	645,045
Amortized Cost	822,699	$ 778,261	$ 858,010
Due in one year or less,Fair Value	4,875
Due from one year to five years, Fair Value	62,119
Due from five to ten years, Fair Value	55,280
Due after ten years, Fair Value	62,452
Mortgage-backed securities, Fair Value	658,920
Total Fair Value	$ 843,646	$ 783,185	$ 862,154