Loan Quality (Allowance For Loan Losses And Recorded Investment In Financing Receivables Individually and Collectively) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance individually	$ 36,915		$ 28,034
Loans evaluated for allowance collectively	715,681		738,376
Total Loans	752,596		766,410
ALL established for loans individually	1,245		2,959
ALL established for loan evaluated collectively	8,868		6,764
ALL, Ending Balance	10,113	9,627	9,723	9,195	10,150	8,801
Residential Real Estate First Liens [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance individually	3,789		3,899
Loans evaluated for allowance collectively	144,441		137,998
Total Loans	148,230		141,897
ALL established for loans individually			495
ALL established for loan evaluated collectively	863		554
ALL, Ending Balance	863	777	1,049	1,154	529	600
Residential Real Estate Junior Liens & Lines of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance individually	740		162
Loans evaluated for allowance collectively	42,445		47,974
Total Loans	43,185		48,136
ALL established for loans individually			3
ALL established for loan evaluated collectively	318		305
ALL, Ending Balance	318	321	308	331	313	352
Residential Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance individually	571		43
Loans evaluated for allowance collectively	15,222		21,239
Total Loans	15,793		21,282
ALL established for loan evaluated collectively	917		1,222
ALL, Ending Balance	917	925	1,222	849	2,392	2,596
Commercial, industrial and agricultural real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance individually	27,729		21,622
Loans evaluated for allowance collectively	338,612		337,352
Total Loans	366,341		358,974
ALL established for loans individually	400		1,591
ALL established for loan evaluated collectively	5,551		3,666
ALL, Ending Balance	5,951	5,839	5,257	4,340	4,644	3,358
Commercial, industrial and agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance individually	4,086		2,308
Loans evaluated for allowance collectively	163,224		180,386
Total Loans	167,310		182,694
ALL established for loans individually	845		870
ALL established for loan evaluated collectively	1,015		781
ALL, Ending Balance	1,860	1,564	1,651	2,135	1,861	1,578
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans evaluated for allowance collectively	11,737		13,427
Total Loans	11,737		13,427
ALL established for loan evaluated collectively	204		236
ALL, Ending Balance	$ 204	$ 201	$ 236	$ 386	$ 411	$ 317