SECURITIES (Schedule of Unrealized Gross Losses and Estimated Fair values of Investment Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Fair Value - Less Than 12 Months	$ 21,434	$ 120,364
Unrealized Losses - Less Than 12 Months	(230)	(611)
Fair Value - 12 Months of More	235,022	307,951
Unrealized Losses - 12 Months or More	(3,866)	(7,313)
Fair Value	256,456	428,315
Unrealized losses	(4,096)	(7,924)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	6,160	5,756
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(40)	(19)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	6,160	5,756
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	(40)	(19)
Mortgage-backed securities issued or guaranteed by U.S. government-sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Fair Value - Less Than 12 Months	10,308	42,856
Unrealized Losses - Less Than 12 Months	(26)	(171)
Fair Value - 12 Months of More	73,476	125,439
Unrealized Losses - 12 Months or More	(904)	(1,834)
Fair Value	83,784	168,295
Unrealized losses	(930)	(2,005)
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Schedule of Available-for-sale Securities [Line Items]
Fair Value - Less Than 12 Months	9,308	75,723
Unrealized Losses - Less Than 12 Months	(171)	(432)
Fair Value - 12 Months of More	161,546	182,512
Unrealized Losses - 12 Months or More	(2,962)	(5,479)
Fair Value	170,854	258,235
Unrealized losses	(3,133)	(5,911)
Private issue collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Fair Value - Less Than 12 Months	1,818	1,785
Unrealized Losses - Less Than 12 Months	(33)	(8)
Fair Value - 12 Months of More	0	0
Unrealized Losses - 12 Months or More	0	0
Fair Value	1,818	1,785
Unrealized losses	(33)	(8)
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	6,160	5,756
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(40)	(19)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value	6,160	5,756
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ (40)	$ (19)