INVESTMENT SECURITIES (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Due in one year or less, Amortized Cost	$ 4,574
Due from one year to five years, Amortized Cost	48,907
Due from five to ten years, Amortized Cost	63,934
Due after ten years, Amortized Cost	64,952
Mortgage-backed Securities, Amortized Cost	622,313
Amortized Cost	804,680	$ 533,219	$ 524,792
Due in one year or less,Fair Value	4,604
Due from one year to five years, Fair Value	50,206
Due from five to ten years, Fair Value	65,751
Due after ten years, Fair Value	65,304
Mortgage-backed securities, Fair Value	625,520
Total Fair Value	$ 811,385	$ 541,805	$ 529,509