Credit Quality of Loans and Allowance for Loan Losses, Credit Quality Indicators and Aging (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012
Credit Risk Profile [Abstract]
Loans	$ 1,118,572		$ 1,046,940	[1]	$ 751,455
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	6,902		8,089
60-89 Days Past Due	804	[2]	2,978	[2]
Greater than 90 Days Past Due	5,673	[2]	7,867	[2]
Total Past Due	13,379		18,934
Current	1,105,193		1,028,006
Total Loans	1,118,572		1,046,940
Recorded Investment > 90 days and Accruing	117		1,986
Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	391,241		315,655
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	1,107		2,220
60-89 Days Past Due	192	[2]	321	[2]
Greater than 90 Days Past Due	1,747	[2]	2,580	[2]
Total Past Due	3,046		5,121
Current	388,195		310,534
Total Loans	391,241		315,655
Recorded Investment > 90 days and Accruing	92		1,019
Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	64,166		58,350
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	907		66
60-89 Days Past Due	0	[2]	96	[2]
Greater than 90 Days Past Due	226	[2]	101	[2]
Total Past Due	1,133		263
Current	63,033		58,087
Total Loans	64,166		58,350
Recorded Investment > 90 days and Accruing	0		0
Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	404,543		414,384
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	3,241		4,131
60-89 Days Past Due	87	[2]	2,108	[2]
Greater than 90 Days Past Due	2,275	[2]	3,577	[2]
Total Past Due	5,603		9,816
Current	398,940		404,568
Total Loans	404,543		414,384
Recorded Investment > 90 days and Accruing	0		952
Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	859,950		788,389
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	18,685		16,984
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	133		0
60-89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days Past Due	0	[2]	0	[2]
Total Past Due	133		0
Current	18,552		16,984
Total Loans	18,685		16,984
Recorded Investment > 90 days and Accruing	0		0
Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	141,689		142,858
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	983		1,140
60-89 Days Past Due	325	[2]	317	[2]
Greater than 90 Days Past Due	1,176	[2]	1,408	[2]
Total Past Due	2,484		2,865
Current	139,205		139,993
Total Loans	141,689		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		0
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	160,374		159,842
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	0		6,807
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	21		24
60-89 Days Past Due	0	[2]	2	[2]
Greater than 90 Days Past Due	14	[2]	15	[2]
Total Past Due	35		41
Current	5,799		6,766
Total Loans	5,834		6,807
Recorded Investment > 90 days and Accruing	14		15
Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	84,737		83,754
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	387		421
60-89 Days Past Due	200	[2]	134	[2]
Greater than 90 Days Past Due	235	[2]	186	[2]
Total Past Due	822		741
Current	83,915		83,013
Total Loans	84,737		83,754
Recorded Investment > 90 days and Accruing	11		0
Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	5,656		5,769
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	0		0
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	5,656		5,769
Total Loans	5,656		5,769
Recorded Investment > 90 days and Accruing	0		0
Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	2,021		2,379
Age Analysis of Past Due Loans by Class of Loans [Abstract]
30-59 Days Past Due	123		87
60-89 Days Past Due	0	[2]	0	[2]
Greater than 90 Days Past Due	0	[2]	0	[2]
Total Past Due	123		87
Current	1,898		2,292
Total Loans	2,021		2,379
Recorded Investment > 90 days and Accruing	0		0
Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	98,248		98,709
Pass [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	383,435		304,219
Pass [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	63,090		54,737
Pass [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	378,809		396,077
Pass [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	825,334		755,033
Percentage of Total Loans (in hundredths)	95.98%		95.76%
Pass [Member] | Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	18,561		16,785
Pass [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	138,403		137,681
Pass [Member] | Residential - Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Pass [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	156,964		154,466
Percentage of Total Loans (in hundredths)	97.87%		96.64%
Pass [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Special mention [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	2,071		5,748
Special mention [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	0		684
Special mention [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	6,559		6,224
Special mention [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	8,630		12,656
Percentage of Total Loans (in hundredths)	1.00%		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	589		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	589		1,612
Percentage of Total Loans (in hundredths)	0.37%		1.01%
Special mention [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Substandard [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	5,481		4,503
Substandard [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	1,076		2,925
Substandard [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	19,073		7,514
Substandard [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	25,630		14,942
Percentage of Total Loans (in hundredths)	2.98%		1.90%
Substandard [Member] | Residential - Construction [Member]
Credit Risk Profile [Abstract]
Loans	124		199
Substandard [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	2,697		3,565
Substandard [Member] | Residential - Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Substandard [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	2,821		3,764
Percentage of Total Loans (in hundredths)	1.76%		2.35%
Substandard [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Doubtful [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	254		1,185
Doubtful [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	0		4
Doubtful [Member] | Commercial Real Estate - Other [Member]
Credit Risk Profile [Abstract]
Loans	102		4,569
Doubtful [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	356		5,758
Percentage of Total Loans (in hundredths)	0.04%		0.73%
Performing [Member]
Credit Risk Profile [Abstract]
Percentage of Total Loans (in hundredths)	99.62%		99.57%
Performing [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	0		6,792
Performing [Member] | Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	84,379		83,347
Performing [Member] | Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	5,656		5,769
Performing [Member] | Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	2,021		2,379
Performing [Member] | Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	97,877		98,287
Nonperforming [Member]
Credit Risk Profile [Abstract]
Percentage of Total Loans (in hundredths)	0.38%		0.43%
Nonperforming [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	0		15
Nonperforming [Member] | Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	358		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	$ 371		$ 422

[1] Derived from audited financial statements.

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