SECURITIES (Details 4) $ in Thousands	Dec. 31, 2016 USD ($) holding	Dec. 31, 2015 USD ($) holding
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	121	123
Fair value, less than 12 months	$ 444,471	$ 304,830
Fair value, 12 months or longer	56,356	92,785
Fair value, Total	500,827	397,615
Unrealized losses, Total	(8,594)	(7,078)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(5,510)	(2,882)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (3,084)	$ (4,196)
US Government Agencies Debt Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding		3
Fair value, less than 12 months		$ 1,990
Fair value, 12 months or longer		0
Fair value, Total		1,990
Unrealized losses, Total		(4)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months		(4)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months		$ 0
Agency mortgage-backed securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	57	57
Fair value, less than 12 months	$ 137,949	$ 112,648
Fair value, 12 months or longer	0	4,297
Fair value, Total	137,949	116,945
Unrealized losses, Total	(1,594)	(1,202)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(1,594)	(1,062)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ 0	$ (140)
Agency collateralized mortgage obligations [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	32	23
Fair value, less than 12 months	$ 243,051	$ 147,707
Fair value, 12 months or longer	47,403	80,927
Fair value, Total	290,454	228,634
Unrealized losses, Total	(5,129)	(4,404)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(3,140)	(1,420)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (1,989)	$ (2,984)
Single issuer trust preferred securities issued by banks and insurers
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	1	2
Fair value, less than 12 months	$ 0	$ 1,018
Fair value, 12 months or longer	1,036	1,018
Fair value, Total	1,036	2,036
Unrealized losses, Total	(3)	(81)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	0	(33)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (3)	$ (48)
Pooled trust preferred securities issued by banks and insurers
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	1	1
Fair value, less than 12 months	$ 0	$ 0
Fair value, 12 months or longer	1,583	1,572
Fair value, Total	1,583	1,572
Unrealized losses, Total	(616)	(645)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	0	0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (616)	$ (645)
Small Business Administration Pooled Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	5	3
Fair value, less than 12 months	$ 59,846	$ 37,986
Fair value, 12 months or longer	0	0
Fair value, Total	59,846	37,986
Unrealized losses, Total	(699)	(174)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	$ (699)	$ (174)
Marketable securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings | holding	25	34
Fair value, less than 12 months	$ 3,625	$ 3,481
Fair value, 12 months or longer	6,334	4,971
Fair value, Total	9,959	8,452
Unrealized losses, Total	(553)	(568)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(77)	(189)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (476)	$ (379)