Credit Quality of Loans and Allowance for Loan Losses, Credit Quality Indicators and Aging (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Credit Risk Profile [Abstract]
Loans	$ 1,037,859		$ 1,046,940	[1]
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	5,383	[2]	8,089	[2]
60-89 Days Past Due	995	[2]	2,978	[2]
Greater than 90 Days Past Due	5,699	[2]	7,867	[2]
Total Past Due	12,077		18,934
Current	1,025,782		1,028,006
Total Loans	1,037,859		1,046,940
Recorded Investment > 90 days and Accruing	163		1,986
Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	315,397		315,655
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	1,011	[2]	2,220	[2]
60-89 Days Past Due	51	[2]	321	[2]
Greater than 90 Days Past Due	1,669	[2]	2,580	[2]
Total Past Due	2,731		5,121
Current	312,666		310,534
Total Loans	315,397		315,655
Recorded Investment > 90 days and Accruing	141		1,019
Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	65,133		58,350
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	229	[2]	66	[2]
60-89 Days Past Due	537	[2]	96	[2]
Greater than 90 Days Past Due	188	[2]	101	[2]
Total Past Due	954		263
Current	64,179		58,087
Total Loans	65,133		58,350
Recorded Investment > 90 days and Accruing	0		0
Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	405,705		414,384
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	1,663	[2]	4,131	[2]
60-89 Days Past Due	176	[2]	2,108	[2]
Greater than 90 Days Past Due	2,449	[2]	3,577	[2]
Total Past Due	4,288		9,816
Current	401,417		404,568
Total Loans	405,705		414,384
Recorded Investment > 90 days and Accruing			952
Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	786,235		788,389
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	17,375		16,984
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	0	[2]	0	[2]
60-89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days Past Due	0	[2]	0	[2]
Total Past Due	0		0
Current	17,375		16,984
Total Loans	17,375		16,984
Recorded Investment > 90 days and Accruing	0		0
Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	138,284		142,858
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	2,000	[2]	1,140	[2]
60-89 Days Past Due	124	[2]	317	[2]
Greater than 90 Days Past Due	1,251	[2]	1,408	[2]
Total Past Due	3,375		2,865
Current	134,909		139,993
Total Loans	138,284		142,858
Recorded Investment > 90 days and Accruing	0		0
Residential - Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	0	[2]	0	[2]
60-89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days Past Due	0	[2]	0	[2]
Total Past Due	0		0
Current	0		0
Total Loans	0		0
Recorded Investment > 90 days and Accruing	0		0
Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	155,659		159,842
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	5,921		6,807
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	37	[2]	24	[2]
60-89 Days Past Due	3	[2]	2	[2]
Greater than 90 Days Past Due	0	[2]	15	[2]
Total Past Due	40		41
Current	5,881		6,766
Total Loans	5,921		6,807
Recorded Investment > 90 days and Accruing	0		15
Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	82,977		83,754
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	361	[2]	421	[2]
60-89 Days Past Due	97	[2]	134	[2]
Greater than 90 Days Past Due	142	[2]	186	[2]
Total Past Due	600		741
Current	82,377		83,013
Total Loans	82,977		83,754
Recorded Investment > 90 days and Accruing	22		0
Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	4,962		5,769
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	4	[2]	0	[2]
60-89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days Past Due	0	[2]	0	[2]
Total Past Due	4		0
Current	4,958		5,769
Total Loans	4,962		5,769
Recorded Investment > 90 days and Accruing	0		0
Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	2,105		2,379
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	78	[2]	87	[2]
60-89 Days Past Due	7	[2]	0	[2]
Greater than 90 Days Past Due	0	[2]	0	[2]
Total Past Due	85		87
Current	2,020		2,292
Total Loans	2,105		2,379
Recorded Investment > 90 days and Accruing	0		0
Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	95,965		98,709
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Pass [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	308,294		304,219
Pass [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	62,579		54,737
Pass [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	380,402		396,077
Pass [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	751,275		755,033
Percentage of Total Loans (in hundredths)	95.55%		95.76%
Pass [Member] | Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	17,139		16,785
Pass [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	133,525		137,681
Pass [Member] | Residential - Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Pass [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	150,664		154,466
Percentage of Total Loans (in hundredths)	96.79%		96.64%
Special Mention [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	2,897		5,748
Special Mention [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	663		684
Special Mention [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	13,729		6,224
Special Mention [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	17,289		12,656
Percentage of Total Loans (in hundredths)	2.20%		1.61%
Special Mention [Member] | Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Special Mention [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	1,398		1,612
Special Mention [Member] | Residential - Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Special Mention [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	1,398		1,612
Percentage of Total Loans (in hundredths)	0.90%		1.01%
Substandard [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	3,887		4,503
Substandard [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	1,888		2,925
Substandard [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	6,816		7,514
Substandard [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	12,591		14,942
Percentage of Total Loans (in hundredths)	1.60%		1.90%
Substandard [Member] | Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	236		199
Substandard [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	3,361		3,565
Substandard [Member] | Residential - Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Substandard [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	3,597		3,764
Percentage of Total Loans (in hundredths)	2.31%		2.35%
Doubtful [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	319		1,185
Doubtful [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	3		4
Doubtful [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	4,758		4,569
Doubtful [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	5,080		5,758
Percentage of Total Loans (in hundredths)	0.65%		0.73%
Performing [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	5,892		6,792
Performing [Member] | Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	82,722		83,347
Performing [Member] | Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	4,962		5,769
Performing [Member] | Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	2,105		2,379
Performing [Member] | Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	95,681		98,287
Percentage of Total Loans (in hundredths)	99.70%		99.57%
Nonperforming [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	29		15
Nonperforming [Member] | Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	255		407
Nonperforming [Member] | Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Nonperforming [Member] | Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Nonperforming [Member] | Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	$ 284		$ 422
Percentage of Total Loans (in hundredths)	0.30%		0.43%

[1] Derived from audited financial statements

[2] Past due amounts may include loans on nonaccrual status.