SECURITIES (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Amortized Cost, Available for sale:
Within one year	$ 11,391
One to five years	36,845
Five to ten years	153,264
Beyond ten years	250,430
Total	451,930	524,529
Fair Value, Available for sale:
Within one year	11,412
One to five years	37,744
Five to ten years	153,603
Beyond ten years	252,705
Estimated Fair Value	455,464	529,070
Amortized Cost, Held to maturity:
Within one year	47,991
One to five years	47,841
Five to ten years	19,075
Beyond ten years	81,407
Total	196,314	210,735
Fair Value, Held to maturity:
Within one year	48,012
One to five years	48,216
Five to ten years	19,994
Beyond ten years	82,885
Estimated Fair Value	$ 199,107	$ 213,702