SECURITIES (Details 1) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Available for sale:
Less than 12 months, Fair Value	$ 671,551	$ 488,360
Less than 12 months, Unrealized losses	(12,400)	(4,481)
Greater than 12 months, Fair Value	57,415	135,602
Greater than 12 months, Unrealized losses	(2,825)	(4,677)
Held to maturity:
Less than 12 months, Fair Value	101,846	63,690
Less than 12 months, Unrealized losses	(1,530)	(689)
Greater than 12 months, Fair Value	13,540	19,492
Greater than 12 months, Unrealized losses	(521)	(526)
U.S. GSE securities
Available for sale:
Less than 12 months, Fair Value	63,649	37,759
Less than 12 months, Unrealized losses	(1,344)	(235)
Greater than 12 months, Fair Value		24,914
Greater than 12 months, Unrealized losses		(329)
State and municipal obligations
Available for sale:
Less than 12 months, Fair Value	78,883	39,621
Less than 12 months, Unrealized losses	(1,338)	(298)
Greater than 12 months, Fair Value	240	5,118
Greater than 12 months, Unrealized losses	(1)	(24)
Held to maturity:
Less than 12 months, Fair Value	21,867	18,375
Less than 12 months, Unrealized losses	(130)	(113)
Greater than 12 months, Fair Value
Greater than 12 months, Unrealized losses
U.S. GSE residential mortgage-backed securities
Available for sale:
Less than 12 months, Fair Value	140,514	136,025
Less than 12 months, Unrealized losses	(2,409)	(1,224)
Greater than 12 months, Fair Value	241	1,510
Greater than 12 months, Unrealized losses	(5)	(46)
Held to maturity:
Less than 12 months, Fair Value	13,156	7,503
Less than 12 months, Unrealized losses	(287)	(106)
Greater than 12 months, Fair Value
Greater than 12 months, Unrealized losses
U.S. GSE residential collateralized mortgage Obligations
Available for sale:
Less than 12 months, Fair Value	319,197	187,543
Less than 12 months, Unrealized losses	(5,221)	(1,781)
Greater than 12 months, Fair Value	15,627	66,830
Greater than 12 months, Unrealized losses	(515)	(2,107)
Held to maturity:
Less than 12 months, Fair Value	31,297	15,918
Less than 12 months, Unrealized losses	(455)	(149)
Greater than 12 months, Fair Value	3,873	15,679
Greater than 12 months, Unrealized losses	(97)	(349)
U.S. GSE commercial mortgage-backed securities
Available for sale:
Less than 12 months, Fair Value	2,573	8,594
Less than 12 months, Unrealized losses	(36)	(80)
Greater than 12 months, Fair Value
Greater than 12 months, Unrealized losses
Held to maturity:
Less than 12 months, Fair Value	12,860	13,982
Less than 12 months, Unrealized losses	(286)	(313)
Greater than 12 months, Fair Value	5,877
Greater than 12 months, Unrealized losses	(223)
U.S. GSE commercial collateralized mortgage Obligations
Available for sale:
Less than 12 months, Fair Value	48,901	51,178
Less than 12 months, Unrealized losses	(886)	(503)
Greater than 12 months, Fair Value	6,292	10,034
Greater than 12 months, Unrealized losses	(70)	(117)
Held to maturity:
Less than 12 months, Fair Value	22,666	7,912
Less than 12 months, Unrealized losses	(372)	(8)
Greater than 12 months, Fair Value	3,790	3,813
Greater than 12 months, Unrealized losses	(201)	(177)
Other asset backed securities
Available for sale:
Less than 12 months, Fair Value
Less than 12 months, Unrealized losses
Greater than 12 months, Fair Value	22,552	22,371
Greater than 12 months, Unrealized losses	(1,697)	(1,879)
Corporate bonds
Available for sale:
Less than 12 months, Fair Value	17,834	27,640
Less than 12 months, Unrealized losses	(1,166)	(360)
Greater than 12 months, Fair Value	12,463	4,825
Greater than 12 months, Unrealized losses	(537)	(175)
Held to maturity:
Less than 12 months, Fair Value
Less than 12 months, Unrealized losses
Greater than 12 months, Fair Value
Greater than 12 months, Unrealized losses