LOANS, Aggregate Allowance for Loan Losses and Related Party Lending (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Activity in allowance for loan losses [Roll Forward]
Beginning balance	$ 7,276,000	$ 8,813,000	$ 7,995,000
Provision for loan losses	2,050,000	3,925,000	5,020,000
Recoveries	300,000	310,000	254,000
Loans charged-off	(2,256,000)	(5,772,000)	(4,456,000)
Ending balance	7,370,000	7,276,000	8,813,000
Transfers from loans to ORE	879,000	7,300,000	1,200,000
Number of secured credits transferred to ORE		1
Secured credit added to ORE		4,900,000
Activity in related party loans and commitments to extend credit [Roll Forward]
Balance, beginning of year	1,980,000
New loans	21,000
Change in related parties due to acquisition	4,941,000
Repayments and adjustments	(21,000)
Balance, end of year	6,921,000	1,980,000
Number of industry segment concentration above threshold limit	1
Threshold percentage of loan portfolio (in hundredths)	10.00%
Loans exposure in oil and gas industry	146,200,000
Exposure in oil and gas industry specified as percentage of total loans (in hundredths)	14.00%
Loans with exposure in commercial real estate	472,400,000
Percentage of CRE loans secured by owner-occupied commercial properties (in hundredths)	57.00%
Loans on nonaccrual status	8,887,000	6,229,000
Commercial, Financial and Agricultural [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	1,734,000	1,664,000
Provision for loan losses	674,000	1,027,000
Recoveries	181,000	152,000
Loans charged-off	(1,054,000)	(1,109,000)
Ending balance	1,535,000	1,734,000
Real Estate Construction [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	1,661,000	2,963,000
Provision for loan losses	468,000	1,128,000
Recoveries	18,000	14,000
Loans charged-off	0	(2,444,000)
Ending balance	2,147,000	1,661,000
Commercial Real Estate [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	2,215,000	2,565,000
Provision for loan losses	500,000	895,000
Recoveries	1,000	1,000
Loans charged-off	(550,000)	(1,246,000)
Ending balance	2,166,000	2,215,000
Activity in related party loans and commitments to extend credit [Roll Forward]
Loans with exposure in commercial real estate	359,200,000
Loans on nonaccrual status	4,000,000
Nonaccrual status of loans specified as percentage of total loans (in hundredths)	1.10%
Real Estate - Residential [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	936,000	862,000
Provision for loan losses	124,000	353,000
Recoveries	2,000	4,000
Loans charged-off	(126,000)	(283,000)
Ending balance	936,000	936,000
Consumer [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	710,000	730,000
Provision for loan losses	261,000	513,000
Recoveries	98,000	138,000
Loans charged-off	(526,000)	(671,000)
Ending balance	543,000	710,000
Finance Leases Commercial [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	19,000	29,000
Provision for loan losses	22,000	8,000
Recoveries	0	1,000
Loans charged-off	0	(19,000)
Ending balance	41,000	19,000
Other [Member]
Activity in allowance for loan losses [Roll Forward]
Beginning balance	1,000	0
Provision for loan losses	1,000	1,000
Recoveries	0	0
Loans charged-off	0	0
Ending balance	$ 2,000	$ 1,000