SECURITIES (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Amortized Cost, Available for sale:
Within one year	$ 7,622
One to five years	72,230
Five to ten years	152,293
Beyond ten years	329,426
Total	561,571	524,529
Fair Value, Available for sale:
Within one year	7,690
One to five years	71,727
Five to ten years	146,821
Beyond ten years	324,712
Estimated Fair Value	550,950	529,070
Amortized Cost, Held to maturity:
Within one year	22,167
One to five years	37,225
Five to ten years	29,525
Beyond ten years	102,990
Total	191,907	210,735
Fair Value, Held to maturity:
Within one year	22,317
One to five years	37,443
Five to ten years	29,663
Beyond ten years	101,389
Estimated Fair Value	$ 190,812	$ 213,702