SECURITIES (Details 5) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Available for sale:
Less than 12 months, Estimated Fair Value	$ 314,519	$ 236,848
Less than 12 months, Gross Unrealized Losses	(5,376)	(2,666)
Greater than 12 months, Estimated Fair Value	329,650	481,253
Greater than 12 months, Gross Unrealized Losses	(15,564)	(13,627)
U.S. GSE securities
Available for sale:
Less than 12 months, Estimated Fair Value	0	0
Less than 12 months, Gross Unrealized Losses	0	0
Greater than 12 months, Estimated Fair Value	28,739	56,815
Greater than 12 months, Gross Unrealized Losses	(1,258)	(1,180)
State and municipal obligations
Available for sale:
Less than 12 months, Estimated Fair Value	22,612	35,350
Less than 12 months, Gross Unrealized Losses	(318)	(301)
Greater than 12 months, Estimated Fair Value	10,404	28,165
Greater than 12 months, Gross Unrealized Losses	(207)	(518)
U.S. GSE residential mortgage-backed securities
Available for sale:
Less than 12 months, Estimated Fair Value	39,156	107,408
Less than 12 months, Gross Unrealized Losses	(1,267)	(1,153)
Greater than 12 months, Estimated Fair Value	59,040	69,571
Greater than 12 months, Gross Unrealized Losses	(2,421)	(1,680)
U.S. GSE residential collateralized mortgage obligations
Available for sale:
Less than 12 months, Estimated Fair Value	189,200	77,705
Less than 12 months, Gross Unrealized Losses	(2,329)	(759)
Greater than 12 months, Estimated Fair Value	132,871	224,932
Greater than 12 months, Gross Unrealized Losses	(6,608)	(6,257)
U.S. GSE commercial mortgage-backed securities
Available for sale:
Less than 12 months, Estimated Fair Value	3,518	2,345
Less than 12 months, Gross Unrealized Losses	(67)	(40)
Greater than 12 months, Estimated Fair Value	0	0
Greater than 12 months, Gross Unrealized Losses	0	0
U.S. GSE commercial collateralized mortgage obligations
Available for sale:
Less than 12 months, Estimated Fair Value	47,103	452
Less than 12 months, Gross Unrealized Losses	(326)	(1)
Greater than 12 months, Estimated Fair Value	45,304	48,264
Greater than 12 months, Gross Unrealized Losses	(2,112)	(1,248)
Other asset backed securities
Available for sale:
Less than 12 months, Estimated Fair Value	0	0
Less than 12 months, Gross Unrealized Losses	0	0
Greater than 12 months, Estimated Fair Value	23,523	23,401
Greater than 12 months, Gross Unrealized Losses	(727)	(849)
Corporate bonds
Available for sale:
Less than 12 months, Estimated Fair Value	12,930	13,588
Less than 12 months, Gross Unrealized Losses	(1,069)	(412)
Greater than 12 months, Estimated Fair Value	29,769	30,105
Greater than 12 months, Gross Unrealized Losses	$ (2,231)	$ (1,895)