Loans and Related Allowace for Credit Losses (Allowance for Loan Losses and Recorded Investments in Loans Receivable) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Beginning Balance	$ 3,883	$ 2,901	$ 2,931	$ 2,824
Charge-offs	(23)	(136)	(181)	(156)
Recoveries	4		6	9
Provision for loan losses	69	116	1,177	204
Ending Balance	3,933	2,881	3,933	2,881
Ending balance: individually evaluated for impairment	1,866	628	1,866	628	775
Ending balance: collectively evaluted for impairment	2,067	2,253	2,067	2,253	2,156
Total loans	280,442	292,009	280,442	292,009	289,681
Ending balance: individually evaluated for impairment	8,949	6,805	8,949	6,805	9,539
Ending balance: collectively evaluated for impairment	271,493	285,204	271,493	285,204	280,142
Number of troubled debt restructurings	0		0
Commercial, financial and agricultural [Member]
Beginning Balance	194	146	195	163
Charge-offs	(2)	(4)	(4)	(8)
Recoveries	4		5
Provision for loan losses	7	3	7	(10)
Ending Balance	203	145	203	145
Ending balance: collectively evaluted for impairment	203	145	203	145	195
Total loans	20,169	17,562	20,169	17,562	19,417
Ending balance: individually evaluated for impairment	197	274	197	274	238
Ending balance: collectively evaluated for impairment	19,972	17,288	19,972	17,288	19,179
Real estate - commercial [Member]
Beginning Balance	403	462	455	442
Provision for loan losses	29	(3)	(23)	17
Ending Balance	432	459	432	459
Ending balance: collectively evaluted for impairment	432	459	432	459	455
Total loans	66,102	58,950	66,102	58,950	60,774
Ending balance: individually evaluated for impairment	2,747	2,322	2,747	2,322	2,312
Ending balance: collectively evaluated for impairment	63,355	56,628	63,355	56,628	58,462
Real estate - construction [Member]
Beginning Balance	271	434	442	336
Provision for loan losses	93	(3)	(78)	95
Ending Balance	364	431	364	431
Ending balance: individually evaluated for impairment	295	303	295	303	343
Ending balance: collectively evaluted for impairment	69	128	69	128	99
Total loans	13,219	18,014	13,219	18,014	17,508
Ending balance: individually evaluated for impairment	2,411	1,150	2,411	1,150	1,870
Ending balance: collectively evaluated for impairment	10,808	16,864	10,808	16,864	15,638
Real estate - mortgage
Beginning Balance	2,951	1,796	1,771	1,810
Charge-offs	(21)	(127)	(176)	(143)
Provision for loan losses	(57)	115	1,278	117
Ending Balance	2,873	1,784	2,873	1,784
Ending balance: individually evaluated for impairment	1,571	325	1,571	325	432
Ending balance: collectively evaluted for impairment	1,302	1,459	1,302	1,459	1,339
Total loans	162,604	181,431	162,604	181,431	176,544
Ending balance: individually evaluated for impairment	3,594	3,059	3,594	3,059	5,119
Ending balance: collectively evaluated for impairment	159,010	178,372	159,010	178,372	171,425
Obligations of state and political subdivisions [Member]
Total loans	12,384	8,433	12,384	8,433	8,780
Ending balance: collectively evaluated for impairment	12,384	8,433	12,384	8,433	8,780
Personal [Member]
Beginning Balance	64	63	68	73
Charge-offs		(5)	(1)	(5)
Recoveries			1	9
Provision for loan losses	(3)	4	(7)	(15)
Ending Balance	61	62	61	62
Ending balance: collectively evaluted for impairment	61	62	61	62	68
Total loans	5,964	7,619	5,964	7,619	6,658
Ending balance: collectively evaluated for impairment	$ 5,964	$ 7,619	$ 5,964	$ 7,619	$ 6,658