SECURITIES (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014 holding	Dec. 31, 2013 holding
Summary of gross unrealized losses and fair value of investments
No of holdings	80	221
Fair value, less than 12 months	$ 64,537	$ 433,230
Fair value, 12 months or longer	143,949	10,928
Fair value, Total	208,486	444,158
Unrealized losses, Total	(6,448)	(16,010)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(467)	(13,520)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(5,981)	(2,490)
US Government Agencies Debt Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	22	39
Fair value, less than 12 months	21,950	39,950
Fair value, 12 months or longer	0	0
Fair value, Total	21,950	39,950
Unrealized losses, Total	(22)	(885)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(22)	(885)
Agency mortgage-backed securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	17	124
Fair value, less than 12 months	3,471	202,004
Fair value, 12 months or longer	42,222	5,108
Fair value, Total	45,693	207,112
Unrealized losses, Total	(693)	(5,589)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(1)	(5,217)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(692)	(372)
Agency collateralized mortgage obligations [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	14	19
Fair value, less than 12 months	35,083	183,721
Fair value, 12 months or longer	94,974	0
Fair value, Total	130,057	183,721
Unrealized losses, Total	(4,101)	(7,278)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(331)	(7,278)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(3,770)
US States and Political Subdivisions Debt Securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings		13
Fair value, less than 12 months		3,838
Fair value, 12 months or longer		0
Fair value, Total		3,838
Unrealized losses, Total		28
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months		28
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months		0
Single issuer trust preferred securities issued by banks and insurers
Summary of gross unrealized losses and fair value of investments
No of holdings	2	2
Fair value, less than 12 months	2,553	1,341
Fair value, 12 months or longer	0	0
Fair value, Total	2,553	1,341
Unrealized losses, Total	(39)	(22)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(39)	(22)
Pooled trust preferred securities issued by banks and insurers
Summary of gross unrealized losses and fair value of investments
No of holdings	2	2
Fair value, less than 12 months	0	0
Fair value, 12 months or longer	2,681	2,300
Fair value, Total	2,681	2,300
Unrealized losses, Total	(1,356)	(1,913)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	(1,356)	(1,913)
Marketable securities [Member]
Summary of gross unrealized losses and fair value of investments
No of holdings	23	22
Fair value, less than 12 months	1,480	2,376
Fair value, 12 months or longer	4,072	3,520
Fair value, Total	5,552	5,896
Unrealized losses, Total	(237)	(295)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months	(74)	(90)
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months	$ (163)	$ (205)