Loans and Allowance for Loan Losses (Loans Past Due) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 3,585	$ 6,656
60-89 Days Past Due	1,014	1,528
Greater Than 90 Days	5,798	15,546
Total Past Due	10,397	23,730
Current	965,076	972,610
Total Loans Receivable	975,473	996,340	1,060,146
Accruing loans past due 90 days or more	321	602
Construction and Land Development Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	369	603
60-89 Days Past Due	26	0
Greater Than 90 Days	817	4,172
Total Past Due	1,212	4,775
Current	57,533	64,550
Total Loans Receivable	58,745	69,325
Accruing loans past due 90 days or more	0	72
Other Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,255	2,194
60-89 Days Past Due	294	679
Greater Than 90 Days	3,647	9,792
Total Past Due	5,196	12,665
Current	478,918	492,515
Total Loans Receivable	484,114	505,180
Accruing loans past due 90 days or more	66	279
Asset-based Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
Greater Than 90 Days	0	0
Total Past Due	0	0
Current	36,679	37,540
Total Loans Receivable	36,679	37,540
Accruing loans past due 90 days or more	0	0
Other Commercial Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	366	546
60-89 Days Past Due	50	442
Greater Than 90 Days	489	419
Total Past Due	905	1,407
Current	115,966	116,383
Total Loans Receivable	116,871	117,790
Accruing loans past due 90 days or more	64	50
Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	49	121
60-89 Days Past Due	0	37
Greater Than 90 Days	31	141
Total Past Due	80	299
Current	37,656	36,725
Total Loans Receivable	37,736	37,024
Accruing loans past due 90 days or more	31	0
Other 1-4 Family Residential Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,329	2,978
60-89 Days Past Due	584	303
Greater Than 90 Days	791	981
Total Past Due	2,704	4,262
Current	198,288	182,553
Total Loans Receivable	200,992	186,815
Accruing loans past due 90 days or more	137	174
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	217	214
60-89 Days Past Due	60	67
Greater Than 90 Days	23	41
Total Past Due	300	322
Current	40,036	42,344
Total Loans Receivable	40,336	42,666
Accruing loans past due 90 days or more	$ 23	$ 27