LOANS AND ALLOWANCE (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012 item	Sep. 30, 2011 item	Sep. 30, 2012 item	Sep. 30, 2011 item	Dec. 31, 2011
Troubled debt restructurings
Allowance for loan losses increased due to troubled debt restructurings	$ 10		$ 10
Loans by class modified as troubled debt restructurings
Number of Loans	1	25	3	74
Pre-Modification Outstanding Recorded Investment	91	6,347	165	15,810
Post-Modification Outstanding Recorded Investment	91	6,347	165	14,763
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans	5	2	16	19
Recorded Investment	2,553	125	5,987	2,383
Period of contractually past due loans under the modified terms, to be considered in payment default			90 days
Additional disclosures
Allocated specific reserves	265		265		3,013
Charge offs due to troubled debt restructurings			2,399
Reserves on troubled debt restructurings provided in prior quarters			1,768
Recorded investment of loans modified other than troubled debt restructurings	18,668		18,668
Commercial | Commercial and industrial
Loans by class modified as troubled debt restructurings
Number of Loans	1	1	1	2
Pre-Modification Outstanding Recorded Investment	91	181	91	213
Post-Modification Outstanding Recorded Investment	91	181	91	213
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans	2		3	3
Recorded Investment	2,058		2,195	597
Commercial Real Estate | Construction and development
Loans by class modified as troubled debt restructurings
Number of Loans		2		3
Pre-Modification Outstanding Recorded Investment		3,779		4,287
Post-Modification Outstanding Recorded Investment		3,779		4,287
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans			1
Recorded Investment			323
Commercial Real Estate | Other
Loans by class modified as troubled debt restructurings
Number of Loans		4		16
Pre-Modification Outstanding Recorded Investment		1,862		4,325
Post-Modification Outstanding Recorded Investment		1,862		3,701
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans	1		9	7
Recorded Investment	370		3,332	910
Commercial Real Estate | Farm
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans				2
Recorded Investment				532
Commercial Real Estate | Hotel
Loans by class modified as troubled debt restructurings
Number of Loans				1
Pre-Modification Outstanding Recorded Investment				5,833
Post-Modification Outstanding Recorded Investment				5,410
Residential | Home Equity
Loans by class modified as troubled debt restructurings
Number of Loans		16	1	39
Pre-Modification Outstanding Recorded Investment		308	70	693
Post-Modification Outstanding Recorded Investment		308	70	693
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans			1	3
Recorded Investment			12	33
Residential | 1-4 Family
Loans by class modified as troubled debt restructurings
Number of Loans		2		6
Pre-Modification Outstanding Recorded Investment		217		406
Post-Modification Outstanding Recorded Investment		217		406
Loans by class modified as troubled debt restructurings for which there was a payment default within twelve months following the modification
Number of Loans	2	2	2	4
Recorded Investment	125	125	125	311
Consumer | Direct
Loans by class modified as troubled debt restructurings
Number of Loans			1	7
Pre-Modification Outstanding Recorded Investment			4	53
Post-Modification Outstanding Recorded Investment			$ 4	$ 53
Minimum
Troubled debt restructurings
Period of modifications involving a reduction of the stated interest rate of the loan			60 months
Period of modifications involving an extension of the maturity date			6 months
Maximum
Troubled debt restructurings
Period of modifications involving a reduction of the stated interest rate of the loan			30 years
Period of modifications involving an extension of the maturity date			14 months