Loans (Summary Of Past Due Accruing Loans, Nonaccrual Loans And Current Loans By Loan Segment And Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 1,325	$ 5,345
60-89 Days Past Due	295	324
90 Days and Greater Past Due	0	186
Nonaccrual	12,164	8,342
Total Past Due Accruing	13,784	14,197
Current	745,830	722,937
Total loans	759,614	737,134	703,459
Commercial Related Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	375	3,967
60-89 Days Past Due	268	0
90 Days and Greater Past Due	0	0
Nonaccrual	11,548	7,846
Total Past Due Accruing	12,191	11,813
Current	615,258	595,667
Total loans	627,449	607,480	574,579
Builder & Developer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	400
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	385	255
Total Past Due Accruing	385	655
Current	96,810	96,281
Total loans	97,195	96,936	99,697
Commercial Real Estate Investor [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	3,417	3,277
Total Past Due Accruing	3,417	3,277
Current	121,500	119,437
Total loans	124,917	122,714	119,461
Residential Real Estate Investor [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	2,044
60-89 Days Past Due	268	0
90 Days and Greater Past Due	0	0
Nonaccrual	2,729	687
Total Past Due Accruing	2,997	2,731
Current	63,728	63,688
Total loans	66,725	66,419	61,621
Hotel/Motel [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	0	0
Total Past Due Accruing	0	0
Current	68,903	64,948
Total loans	68,903	64,948	59,462
Wholesale & Retail [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	1,067
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	2,648	1,784
Total Past Due Accruing	2,648	2,851
Current	67,257	67,592
Total loans	69,905	70,443	58,513
Manufacturing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	0	0
Total Past Due Accruing	0	0
Current	37,923	40,258
Total loans	37,923	40,258	26,327
Agriculture [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	375	0
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	0	0
Total Past Due Accruing	375	0
Current	27,560	20,928
Total loans	27,935	20,928	19,069
Other Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	456
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	2,369	1,843
Total Past Due Accruing	2,369	2,299
Current	131,577	122,535
Total loans	133,946	124,834	130,429
Consumer Related Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	950	1,378
60-89 Days Past Due	27	324
90 Days and Greater Past Due	0	186
Nonaccrual	616	496
Total Past Due Accruing	1,593	2,384
Current	130,572	127,270
Total loans	132,165	129,654	128,880
Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	397	474
60-89 Days Past Due	0	129
90 Days and Greater Past Due	0	0
Nonaccrual	52	53
Total Past Due Accruing	449	656
Current	23,089	22,855
Total loans	23,538	23,511	22,650
Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	62
60-89 Days Past Due	0	0
90 Days and Greater Past Due	0	0
Nonaccrual	91	152
Total Past Due Accruing	91	214
Current	68,773	65,644
Total loans	68,864	65,858	58,682
Other Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	553	842
60-89 Days Past Due	27	195
90 Days and Greater Past Due	0	186
Nonaccrual	473	291
Total Past Due Accruing	1,053	1,514
Current	38,710	38,771
Total loans	$ 39,763	$ 40,285	$ 47,548