INTEREST-BEARING DEPOSITS AND SECURITIES (Held-to-maturity Securities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 88,408	$ 86,452
Gross Unrealized Gains	5,469	6,193
Gross Unrealized Losses	(92)	(187)
Fair Value	93,785	92,458
Percent of Total	100.00%	100.00%
Taxable municipal bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	11,115	10,326
Gross Unrealized Gains	461	436
Gross Unrealized Losses	(18)	(157)
Fair Value	11,558	10,605
Percent of Total	12.30%	11.50%
Tax exempt municipal bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	75,243	74,076
Gross Unrealized Gains	5,008	5,757
Gross Unrealized Losses	(74)	(30)
Fair Value	80,177	79,803
Percent of Total	85.50%	86.30%
Total municipal bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	86,358	84,402
Gross Unrealized Gains	5,469	6,193
Gross Unrealized Losses	(92)	(187)
Fair Value	91,735	90,408
Percent of Total	97.80%	97.80%
Corporate bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,050	2,050
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 2,050	$ 2,050
Percent of Total	2.20%	2.20%