Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable Allowance For Credit Losses [Line Items]
Provision (Recovery) of loan losses	$ 3	$ 635	$ (1)	$ 2,156
Increase percentage non accrual loans to total loans (in hundredths)	2.87%		2.87%		3.05%
Reserve ratio decrease percentage of portfolio loans (in hundredths)	1.87%		1.87%		2.02%
Allowance for loan losses:
Beginning Balance			14,311	14,623	14,623
Charge-offs			(1,140)		(4,271)
Recoveries			212		521
Provision (Recovery)			(1)		3,438
Ending Balance	13,382		13,382		14,311
Ending allowance balance attributable to loans:
Individually evaluated for impairment	4,557		4,557		4,303
Collectively evaluated for impairment	8,825		8,825		10,008
Total ending allowance balances	13,382		13,382		14,311
Ending loan recorded investment balances:
Individually evaluated for impairment	25,614		25,614		26,795
Collectively evaluated for impairment	690,492		690,492		682,682
Total Loans	716,106		716,106		709,477
Real Estate Construction [Member]
Allowance for loan losses:
Beginning Balance			1,258	897	897
Charge-offs			(194)		(2,152)
Recoveries			47		2
Provision (Recovery)			257		2,511
Ending Balance	1,368		1,368		1,258
Ending allowance balance attributable to loans:
Individually evaluated for impairment	508		508		166
Collectively evaluated for impairment	860		860		1,092
Total ending allowance balances	1,368		1,368		1,258
Ending loan recorded investment balances:
Individually evaluated for impairment	2,897		2,897		2,969
Collectively evaluated for impairment	34,258		34,258		47,249
Total Loans	37,155		37,155		50,218
Real Estate Secured by Farmland [Member]
Allowance for loan losses:
Beginning Balance			135	110	110
Charge-offs			0		0
Recoveries			0		0
Provision (Recovery)			(26)		25
Ending Balance	109		109		135
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	109		109		135
Total ending allowance balances	109		109		135
Ending loan recorded investment balances:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	11,504		11,504		11,876
Total Loans	11,504		11,504		11,876
Real Estate Secured by 1 - 4 Family Residential [Member]
Allowance for loan losses:
Beginning Balance			6,276	7,465	7,465
Charge-offs			(783)		(893)
Recoveries			109		388
Provision (Recovery)			459		(684)
Ending Balance	6,061		6,061		6,276
Ending allowance balance attributable to loans:
Individually evaluated for impairment	2,904		2,904		2,724
Collectively evaluated for impairment	3,157		3,157		3,552
Total ending allowance balances	6,061		6,061		6,276
Ending loan recorded investment balances:
Individually evaluated for impairment	10,840		10,840		10,792
Collectively evaluated for impairment	259,146		259,146		249,828
Total Loans	269,986		269,986		260,620
Other Real Estate Loans [Member]
Allowance for loan losses:
Beginning Balance			4,348	4,385	4,385
Charge-offs			(97)		(760)
Recoveries			30		86
Provision (Recovery)			(434)		637
Ending Balance	3,847		3,847		4,348
Ending allowance balance attributable to loans:
Individually evaluated for impairment	830		830		1,045
Collectively evaluated for impairment	3,017		3,017		3,303
Total ending allowance balances	3,847		3,847		4,348
Ending loan recorded investment balances:
Individually evaluated for impairment	9,342		9,342		10,640
Collectively evaluated for impairment	251,753		251,753		244,290
Total Loans	261,095		261,095		254,930
Commercial [Member]
Allowance for loan losses:
Beginning Balance			2,098	1,621	1,621
Charge-offs			(38)		(394)
Recoveries			7		12
Provision (Recovery)			(277)		859
Ending Balance	1,790		1,790		2,098
Ending allowance balance attributable to loans:
Individually evaluated for impairment	285		285		338
Collectively evaluated for impairment	1,505		1,505		1,760
Total ending allowance balances	1,790		1,790		2,098
Ending loan recorded investment balances:
Individually evaluated for impairment	2,505		2,505		2,364
Collectively evaluated for impairment	120,780		120,780		116,209
Total Loans	123,285		123,285		118,573
Consumer [Member]
Allowance for loan losses:
Beginning Balance			196	145	145
Charge-offs			(28)		(72)
Recoveries			19		33
Provision (Recovery)			20		90
Ending Balance	207		207		196
Ending allowance balance attributable to loans:
Individually evaluated for impairment	30		30		30
Collectively evaluated for impairment	177		177		166
Total ending allowance balances	207		207		196
Ending loan recorded investment balances:
Individually evaluated for impairment	30		30		30
Collectively evaluated for impairment	13,051		13,051		13,230
Total Loans	$ 13,081		$ 13,081		$ 13,260

Reflects the change for the period expressed as a percentage of the additions and reductions to the loan loss reserve.

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A valuation allowance for financing receivables that are expected to be uncollectible.

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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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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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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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Reflects the percentage derived from dividing impaired loans on which interest has ceased to be accrued by total loans.

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The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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Provision charged for the period based on estimated losses to be realized from loan transactions.

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