Loans and Allowance for Loan Losses (Past Due Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	$ 1,606	$ 4,959
60-89 days past due	3,075	2,147
90 days or more past due	1,564	1,769
Total past due loans	6,245	8,875
Current	471,755	481,105
Total loans	478,000	489,980
Commercial: Commercial and industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	221	113
Total past due loans	221	113
Current	98,352	96,050
Total loans	98,573	96,163
Commercial: Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due		1,436
Total past due loans		1,436
Current	14,512	14,523
Total loans	14,512	15,959
Commercial: Secured by commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	694	1,857
60-89 days past due	1,469	1,699
90 days or more past due	1,300	1,017
Total past due loans	3,463	4,573
Current	189,467	191,240
Total loans	192,930	195,813
Commercial: Secured by residential real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	361	778
60-89 days past due	1,195	70
90 days or more past due	143	395
Total past due loans	1,699	1,243
Current	41,264	43,827
Total loans	42,963	45,070
State and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	38	50
60-89 days past due	10
90 days or more past due		44
Total past due loans	48	94
Current	31,971	35,033
Total loans	32,019	35,127
Loans to depository institutions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	3,250	4,515
Total loans	3,250	4,515
Indirect lease financing [member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	63	353
60-89 days past due	119	146
90 days or more past due	39	123
Total past due loans	221	622
Current	9,719	11,306
Total loans	9,940	11,928
Retail: 1-4 family residential mortgages [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due		200
60-89 days past due	198	166
Total past due loans	198	366
Current	27,255	25,152
Total loans	27,453	25,518
Retail: Home equity loans and lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	227	158
60-89 days past due	80	66
90 days or more past due	82	190
Total past due loans	389	414
Current	53,881	57,165
Total loans	54,270	57,579
Retail: Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 days past due	2	14
60-89 days past due	4
Total past due loans	6	14
Current	2,084	2,294
Total loans	$ 2,090	$ 2,308