SECURITIES (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Available-for-sale Securities:
Amortized Cost	$ 320,556	$ 294,996
Gross Unrealized Gains	14,020	16,916
Gross Unrealized Losses Other	(2,638)	(3,308)
Other-Than- Temporary Impairment	(2,652)	(3,272)
Fair Value	329,286	305,332
Held-to-maturity Securities:
Amortized Cost	178,318	204,956
Gross Unrealized Gains	7,508	7,207
Gross Unrealized Losses Other	(2)	(669)
Other-Than- Temporary Impairment	0	0
Fair Value	185,824	211,494
Available-for-sale Securities and Held-to-maturity Securities:
Amortized Cost	498,874	499,952
Gross Unrealized Gains	21,528	24,123
Gross Unrealized Losses Other	(2,640)	(3,977)
Other-Than- Temporary Impairment	(2,652)	(3,272)
Fair Value	515,110	516,826
U.S. government agency securities [Member]
Available-for-sale Securities:
Amortized Cost	20,053	0
Gross Unrealized Gains	769	0
Gross Unrealized Losses Other	0	0
Other-Than- Temporary Impairment	0	0
Fair Value	20,822	0
U.S. treasury securities [Member]
Held-to-maturity Securities:
Amortized Cost	1,013	1,014
Gross Unrealized Gains	121	103
Gross Unrealized Losses Other	0	0
Other-Than- Temporary Impairment	0	0
Fair Value	1,134	1,117
Agency mortgage-backed securities [Member]
Available-for-sale Securities:
Amortized Cost	209,381	222,349
Gross Unrealized Gains	12,158	16,042
Gross Unrealized Losses Other	(114)	0
Other-Than- Temporary Impairment	0	0
Fair Value	221,425	238,391
Held-to-maturity Securities:
Amortized Cost	72,360	109,553
Gross Unrealized Gains	4,233	4,406
Gross Unrealized Losses Other	0	0
Other-Than- Temporary Impairment	0	0
Fair Value	76,593	113,959
Agency collateralized mortgage obligations [Member]
Available-for-sale Securities:
Amortized Cost	67,412	52,927
Gross Unrealized Gains	1,001	874
Gross Unrealized Losses Other	(37)	0
Other-Than- Temporary Impairment	0	0
Fair Value	68,376	53,801
Held-to-maturity Securities:
Amortized Cost	97,507	77,804
Gross Unrealized Gains	2,875	2,494
Gross Unrealized Losses Other	(2)	0
Other-Than- Temporary Impairment	0	0
Fair Value	100,380	80,298
State, county, and municipal securities [Member]
Held-to-maturity Securities:
Amortized Cost	915	3,576
Gross Unrealized Gains	11	34
Gross Unrealized Losses Other	0	0
Other-Than- Temporary Impairment	0	0
Fair Value	926	3,610
Private mortgage-backed securities [Member]
Available-for-sale Securities:
Amortized Cost	3,227	6,215
Gross Unrealized Gains	0	0
Gross Unrealized Losses Other	0	0
Other-Than- Temporary Impairment	305	(105)
Fair Value	3,532	6,110
Single issuer trust preferred securities issued by banks [Member]
Available-for-sale Securities:
Amortized Cost	2,255	5,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses Other	(15)	(790)
Other-Than- Temporary Impairment	0	0
Fair Value	2,240	4,210
Held-to-maturity Securities:
Amortized Cost	1,516	8,000
Gross Unrealized Gains	10	15
Gross Unrealized Losses Other	0	(669)
Other-Than- Temporary Impairment	0	0
Fair Value	1,526	7,346
Pooled trust preferred securities issued by banks and insurers [Member]
Available-for-sale Securities:
Amortized Cost	8,353	8,505
Gross Unrealized Gains	0	0
Gross Unrealized Losses Other	(2,415)	(2,518)
Other-Than- Temporary Impairment	(2,957)	(3,167)
Fair Value	2,981	2,820
Marketable securities [Member]
Available-for-sale Securities:
Amortized Cost	9,875	0
Gross Unrealized Gains	92	0
Gross Unrealized Losses Other	(57)	0
Other-Than- Temporary Impairment	0	0
Fair Value	9,910	0
Corporate debt securities [Member]
Held-to-maturity Securities:
Amortized Cost	5,007	5,009
Gross Unrealized Gains	258	155
Gross Unrealized Losses Other	0	0
Other-Than- Temporary Impairment	0	0
Fair Value	$ 5,265	$ 5,164