Credit Quality of Loans and Allowance for Loan Losses, Part III (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012		Dec. 31, 2011
Credit Risk Profile [Abstract]
Loans	$ 808,833		$ 746,305
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	7,470	[1]	7,544	[1]
60 to 89 Days Past Due	905	[1]	1,070	[1]
Greater than 90 Days Past Due	6,765	[1]	5,065	[1]
Total Past Due	15,140		13,679
Current	793,693		732,626
Total Loans	808,833		746,305
Recorded Investment 90 Days Past Due and Accruing	532		231
Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	266,046		223,283
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	878	[1]	622	[1]
60 to 89 Days Past Due	61	[1]	242	[1]
Greater than 90 Days Past Due	2,492	[1]	1,856	[1]
Total Past Due	3,431		2,720
Current	262,615		220,563
Total Loans	266,046		223,283
Recorded Investment 90 Days Past Due and Accruing	526		64
Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	43,302		41,463
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	1,169	[1]	673	[1]
60 to 89 Days Past Due	15	[1]	166	[1]
Greater than 90 Days Past Due	131	[1]	358	[1]
Total Past Due	1,315		1,197
Current	41,987		40,266
Total Loans	43,302		41,463
Recorded Investment 90 Days Past Due and Accruing	0		0
Commercial Real Estate Other [Member]
Credit Risk Profile [Abstract]
Loans	293,579		280,798
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	3,391	[1]	3,185	[1]
60 to 89 Days Past Due	232	[1]	0	[1]
Greater than 90 Days Past Due	3,144	[1]	1,878	[1]
Total Past Due	6,767		5,063
Current	279,502		275,735
Total Loans	286,269		280,798
Recorded Investment 90 Days Past Due and Accruing	0		0
Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	602,927		545,544
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Residential Construction [Member]
Credit Risk Profile [Abstract]
Loans	14,425		11,249
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	142	[1]	0	[1]
60 to 89 Days Past Due	0	[1]	0	[1]
Greater than 90 Days Past Due	0	[1]	0	[1]
Total Past Due	142		0
Current	14,283		11,249
Total Loans	14,425		11,249
Recorded Investment 90 Days Past Due and Accruing	0		0
Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	110,735		113,582
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	1,220	[1]	2,457	[1]
60 to 89 Days Past Due	520	[1]	469	[1]
Greater than 90 Days Past Due	823	[1]	685	[1]
Total Past Due	2,563		3,611
Current	115,482		109,971
Total Loans	118,045		113,582
Recorded Investment 90 Days Past Due and Accruing	0		140
Residential-Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	0	[1]	0	[1]
60 to 89 Days Past Due	0	[1]	0	[1]
Greater than 90 Days Past Due	0	[1]	0	[1]
Total Past Due	0		0
Current	0		0
Total Loans	0		0
Recorded Investment 90 Days Past Due and Accruing	0		0
Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	125,160		124,831
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	5,173		5,200
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	27	[1]	79	[1]
60 to 89 Days Past Due	15	[1]	0	[1]
Greater than 90 Days Past Due	5	[1]	19	[1]
Total Past Due	47		98
Current	5,126		5,102
Total Loans	5,173		5,200
Recorded Investment 90 Days Past Due and Accruing	5		19
Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	68,161		64,780
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	527	[1]	410	[1]
60 to 89 Days Past Due	62	[1]	193	[1]
Greater than 90 Days Past Due	170	[1]	269	[1]
Total Past Due	759		872
Current	67,402		63,908
Total Loans	68,161		64,780
Recorded Investment 90 Days Past Due and Accruing	1		8
Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	5,041		4,276
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	0	[1]	0	[1]
60 to 89 Days Past Due	0	[1]	0	[1]
Greater than 90 Days Past Due	0	[1]	0	[1]
Total Past Due	0		0
Current	5,041		4,276
Total Loans	5,041		4,276
Recorded Investment 90 Days Past Due and Accruing	0		0
Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	2,371		1,674
Financing Receivable, Recorded Investment, Aging [Abstract]
30 to 59 Days Past Due	116	[1]	118	[1]
60 to 89 Days Past Due	0	[1]	0	[1]
Greater than 90 Days Past Due	0	[1]	0	[1]
Total Past Due	116		118
Current	2,255		1,556
Total Loans	2,371		1,674
Recorded Investment 90 Days Past Due and Accruing	0		0
Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	80,746		75,930
Percentage of Total Loans (in hundredths)	100.00%		100.00%
Pass [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	258,281		216,465
Pass [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	39,620		36,631
Pass [Member] | Commercial Real Estate Other [Member]
Credit Risk Profile [Abstract]
Loans	283,062		264,542
Pass [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	580,963		517,638
Percentage of Total Loans (in hundredths)	96.35%		94.88%
Pass [Member] | Residential Construction [Member]
Credit Risk Profile [Abstract]
Loans	14,334		9,041
Pass [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	106,814		104,965
Pass [Member] | Residential-Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Pass [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	121,148		114,006
Percentage of Total Loans (in hundredths)	96.79%		91.33%
Special Mention [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	2,530		1,705
Special Mention [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	718		1,104
Special Mention [Member] | Commercial Real Estate Other [Member]
Credit Risk Profile [Abstract]
Loans	5,171		10,755
Special Mention [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	8,419		13,564
Percentage of Total Loans (in hundredths)	1.40%		2.49%
Special Mention [Member] | Residential Construction [Member]
Credit Risk Profile [Abstract]
Loans	0		1,077
Special Mention [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	588		5,152
Special Mention [Member] | Residential-Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Special Mention [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	588		6,229
Percentage of Total Loans (in hundredths)	0.47%		4.99%
Substandard [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	4,987		4,809
Substandard [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	2,964		3,728
Substandard [Member] | Commercial Real Estate Other [Member]
Credit Risk Profile [Abstract]
Loans	5,346		5,501
Substandard [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	13,297		14,038
Percentage of Total Loans (in hundredths)	2.21%		2.57%
Substandard [Member] | Residential Construction [Member]
Credit Risk Profile [Abstract]
Loans	91		1,131
Substandard [Member] | Residential - Prime [Member]
Credit Risk Profile [Abstract]
Loans	3,333		3,465
Substandard [Member] | Residential-Subprime [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Substandard [Member] | Residential Total [Member]
Credit Risk Profile [Abstract]
Loans	3,424		4,596
Percentage of Total Loans (in hundredths)	2.74%		3.68%
Doubtful [Member] | Commercial, Financial and Agricultural [Member]
Credit Risk Profile [Abstract]
Loans	248		304
Doubtful [Member] | Commercial Real Estate Construction [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Doubtful [Member] | Commercial Real Estate Other [Member]
Credit Risk Profile [Abstract]
Loans	0		0
Doubtful [Member] | Commercial Total [Member]
Credit Risk Profile [Abstract]
Loans	248		304
Percentage of Total Loans (in hundredths)	0.04%		0.06%
Performing [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	5,168		5,182
Performing [Member] | Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	67,866		64,497
Performing [Member] | Finance Leases Commercial [Member]
Credit Risk Profile [Abstract]
Loans	5,041		4,276
Performing [Member] | Other Loans [Member]
Credit Risk Profile [Abstract]
Loans	2,371		1,674
Performing [Member] | Consumer Total [Member]
Credit Risk Profile [Abstract]
Loans	80,446		75,629
Percentage of Total Loans (in hundredths)	99.64%		99.60%
Nonperforming [Member] | Consumer - Credit Card [Member]
Credit Risk Profile [Abstract]
Loans	5		18
Nonperforming [Member] | Consumer - Other [Member]
Credit Risk Profile [Abstract]
Loans	295		283
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	$ 300		$ 301
Percentage of Total Loans (in hundredths)	0.33%		0.40%

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