Loans and Allowance for Loan Losses (Loans Past Due) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 18,460	$ 6,656
60-89 Days Past Due	749	1,528
Greater Than 90 Days	3,838	15,546
Total Past Due	23,047	23,730
Current	964,280	972,610
Total Loans Receivable	987,327	996,340	1,014,966
Total Loans Greater than 90 Days and Accruing	408	602
Construction and Land Development Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	544	603
60-89 Days Past Due	64	0
Greater Than 90 Days	1,023	4,172
Total Past Due	1,631	4,775
Current	55,982	64,550
Total Loans Receivable	57,613	69,325
Total Loans Greater than 90 Days and Accruing	0	72
Other Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	15,726	2,194
60-89 Days Past Due	22	679
Greater Than 90 Days	1,988	9,792
Total Past Due	17,736	12,665
Current	479,126	492,515
Total Loans Receivable	496,862	505,180
Total Loans Greater than 90 Days and Accruing	172	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	42,436	37,540
Total Loans Receivable	42,436	37,540
Total Loans Greater than 90 Days and Accruing	0	0
Other Commercial Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	123	546
60-89 Days Past Due	162	442
Greater Than 90 Days	339	419
Total Past Due	624	1,407
Current	112,830	116,383
Total Loans Receivable	113,454	117,790
Total Loans Greater than 90 Days and Accruing	152	50
Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	139	121
60-89 Days Past Due	0	37
Greater Than 90 Days	10	141
Total Past Due	149	299
Current	37,047	36,725
Total Loans Receivable	37,196	37,024
Total Loans Greater than 90 Days and Accruing	10	0
Other 1-4 Family Residential Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,813	2,978
60-89 Days Past Due	429	303
Greater Than 90 Days	468	981
Total Past Due	2,710	4,262
Current	194,919	182,553
Total Loans Receivable	197,629	186,815
Total Loans Greater than 90 Days and Accruing	67	174
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	115	214
60-89 Days Past Due	72	67
Greater Than 90 Days	10	41
Total Past Due	197	322
Current	41,940	42,344
Total Loans Receivable	42,137	42,666
Total Loans Greater than 90 Days and Accruing	$ 7	$ 27