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Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Allowance for loan losses:
Beginning Balance	$ 13,075	$ 12,937	$ 12,937
Charge-offs	(278)	(1,426)	(3,793)
Recoveries	209	125	376
Provision for (recovery of) loan losses	(250)	2,000	3,555
Ending Balance	12,756	13,636	13,075
Ending Balance:
Allowance for loan losses, Individually evaluated for impairment	1,924	2,811	1,838
Allowance for loan losses, Collectively evaluated for impairment	10,832	10,825	11,237
Loans
Total	382,339	390,394	383,594
Loans, Individually evaluated for impairment	19,220	21,622	16,980
Loans, Collectively evaluated for impairment	363,119	368,772	366,614
Construction and Land Development [Member]
Allowance for loan losses:
Beginning Balance	2,481	2,843	2,843
Charge-offs		(369)	(431)
Recoveries			1
Provision for (recovery of) loan losses	(84)	679	68
Ending Balance	2,397	3,153	2,481
Ending Balance:
Allowance for loan losses, Individually evaluated for impairment	604	1,062	567
Allowance for loan losses, Collectively evaluated for impairment	1,793	2,091	1,914
Loans
Total	45,783	49,893	43,524
Loans, Individually evaluated for impairment	6,098	5,742	2,516
Loans, Collectively evaluated for impairment	39,685	44,151	41,008
Secured by 1-4 family residential [Member]
Allowance for loan losses:
Beginning Balance	3,712	3,766	3,766
Charge-offs	(149)	(481)	(761)
Recoveries	2	2	68
Provision for (recovery of) loan losses	134	854	639
Ending Balance	3,699	4,141	3,712
Ending Balance:
Allowance for loan losses, Individually evaluated for impairment	156	1,041	306
Allowance for loan losses, Collectively evaluated for impairment	3,543	3,100	3,406
Loans
Total	143,765	125,628	134,964
Loans, Individually evaluated for impairment	2,959	5,946	3,776
Loans, Collectively evaluated for impairment	140,806	119,682	131,188
Other Real Estate [Member]
Allowance for loan losses:
Beginning Balance	6,163	5,192	5,192
Charge-offs	(82)	(503)	(2,154)
Recoveries	7	52	64
Provision for (recovery of) loan losses	(263)	649	3,061
Ending Balance	5,825	5,390	6,163
Ending Balance:
Allowance for loan losses, Individually evaluated for impairment	903	574	930
Allowance for loan losses, Collectively evaluated for impairment	4,922	4,816	5,233
Loans
Total	162,742	175,738	174,220
Loans, Individually evaluated for impairment	7,654	9,453	10,528
Loans, Collectively evaluated for impairment	155,088	166,285	163,692
Commercial and Industrial [Member]
Allowance for loan losses:
Beginning Balance	608	963	963
Charge-offs			(261)
Recoveries	139	5	35
Provision for (recovery of) loan losses	(4)	(170)	(129)
Ending Balance	743	798	608
Ending Balance:
Allowance for loan losses, Individually evaluated for impairment	261	134	35
Allowance for loan losses, Collectively evaluated for impairment	482	664	573
Loans
Total	22,743	29,449	23,071
Loans, Individually evaluated for impairment	2,509	481	160
Loans, Collectively evaluated for impairment	20,234	28,968	22,911
Consumer and Other Loans [Member]
Allowance for loan losses:
Beginning Balance	111	173	173
Charge-offs	(47)	(73)	(186)
Recoveries	61	66	208
Provision for (recovery of) loan losses	(33)	(12)	(84)
Ending Balance	92	154	111
Ending Balance:
Allowance for loan losses, Collectively evaluated for impairment	92	154	111
Loans
Total	7,306	9,686	7,815
Loans, Collectively evaluated for impairment	$ 7,306	$ 9,686	$ 7,815

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Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.

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Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts.

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Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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