Loans (Age Analysis of Past Due Loans Segregated by Class of Loans) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 12,697	$ 17,126
60-89 Days Past Due	2,364	5,100
Greater Than 90 Days	15,907	18,079
Total Past Due	30,968	40,305
Current	947,145	950,264
Total loans	978,113	990,569
Total Loans > 90 Days and Accruing	236	273	290
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	286,865	288,848
Commercial [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,897	1,097
60-89 Days Past Due	144	992
Greater Than 90 Days	2,499	2,350
Total Past Due	4,540	4,439
Current	193,135	199,174
Total loans	197,675	203,613
Commercial [Member] | Construction and Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	245	192
Greater Than 90 Days	4,346	4,912
Total Past Due	4,591	5,104
Current	10,524	12,358
Total loans	15,115	17,462
Commercial [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	911	259
60-89 Days Past Due	140	223
Greater Than 90 Days	800	735
Total Past Due	1,851	1,217
Current	72,224	66,556
Total loans	74,075	67,773
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	7,394	12,487
60-89 Days Past Due	1,608	2,732
Greater Than 90 Days	7,074	8,356
Total Past Due	16,076	23,575
Current	474,339	479,044
Total loans	490,415	502,619
Total Loans > 90 Days and Accruing	236	177
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans	200,833	199,102
Consumer Loans [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	682	1,302
60-89 Days Past Due	92	358
Greater Than 90 Days	951	1,119
Total Past Due	1,725	2,779
Current	100,300	97,737
Total loans	102,025	100,516
Consumer Loans [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	175	234
60-89 Days Past Due	8	21
Greater Than 90 Days	54	95
Total Past Due	237	350
Current	5,735	6,248
Total loans	5,972	6,598
Total Loans > 90 Days and Accruing		96
Consumer Loans [Member] | Auto [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	25	47
60-89 Days Past Due		18
Greater Than 90 Days	4	15
Total Past Due	29	80
Current	15,248	15,492
Total loans	15,277	15,572
Consumer Loans [Member] | Boat/RV [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,368	1,508
60-89 Days Past Due	372	756
Greater Than 90 Days	179	497
Total Past Due	1,919	2,761
Current	75,640	73,655
Total loans	$ 77,559	$ 76,416