Allowance For Loan Losses (Balance Of The Allowance Segregated By Segment And Class) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 16,490	$ 16,288	$ 16,503	$ 15,574	$ 15,139	$ 14,406
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	7,186	6,083	6,783	6,703	6,138	6,374
Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,252	1,218	1,143	1,632	1,876	1,035
Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,393	5,197	5,529	4,970	4,305	4,270
Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	874	599	792	919	601	741
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,785	3,191	2,256	1,350	2,219	1,986
Loans Individually Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	515			240
Loans Individually Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	141			57
Loans Individually Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total				183
Loans Individually Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	325
Loans Individually Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	49
Loans Individually Evaluated For Impairment [Member] | Risk Code 7 - Doubtful [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	406			456
Loans Individually Evaluated For Impairment [Member] | Risk Code 7 - Doubtful [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	400			456
Loans Individually Evaluated For Impairment [Member] | Risk Code 7 - Doubtful [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6
Loans Collectively Evaluated For Impairment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	16,490
Loans Collectively Evaluated For Impairment [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	7,186
Loans Collectively Evaluated For Impairment [Member] | Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,252
Loans Collectively Evaluated For Impairment [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	5,393
Loans Collectively Evaluated For Impairment [Member] | Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	874
Loans Collectively Evaluated For Impairment [Member] | Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,785
Loans Collectively Evaluated For Impairment [Member] | Risk Code 2 - Good [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	14
Loans Collectively Evaluated For Impairment [Member] | Risk Code 2 - Good [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	8
Loans Collectively Evaluated For Impairment [Member] | Risk Code 2 - Good [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6
Loans Collectively Evaluated For Impairment [Member] | Risk Code 3 - Satisfactory [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	11,364			9,512
Loans Collectively Evaluated For Impairment [Member] | Risk Code 3 - Satisfactory [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	4,888			3,809
Loans Collectively Evaluated For Impairment [Member] | Risk Code 3 - Satisfactory [Member] | Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,065			1,041
Loans Collectively Evaluated For Impairment [Member] | Risk Code 3 - Satisfactory [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	4,845			4,094
Loans Collectively Evaluated For Impairment [Member] | Risk Code 3 - Satisfactory [Member] | Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	566			568
Loans Collectively Evaluated For Impairment [Member] | Risk Code 4 - Watch [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	413			513
Loans Collectively Evaluated For Impairment [Member] | Risk Code 4 - Watch [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	139			143
Loans Collectively Evaluated For Impairment [Member] | Risk Code 4 - Watch [Member] | Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	10			68
Loans Collectively Evaluated For Impairment [Member] | Risk Code 4 - Watch [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	16			13
Loans Collectively Evaluated For Impairment [Member] | Risk Code 4 - Watch [Member] | Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	248			289
Loans Collectively Evaluated For Impairment [Member] | Risk Code 5 - Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,630			2,271
Loans Collectively Evaluated For Impairment [Member] | Risk Code 5 - Special Mention [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,584			2,180
Loans Collectively Evaluated For Impairment [Member] | Risk Code 5 - Special Mention [Member] | Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	6
Loans Collectively Evaluated For Impairment [Member] | Risk Code 5 - Special Mention [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	32			31
Loans Collectively Evaluated For Impairment [Member] | Risk Code 5 - Special Mention [Member] | Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	8			60
Loans Collectively Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	363			1,232
Loans Collectively Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	26			58
Loans Collectively Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	171			340
Loans Collectively Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Real Estate Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	163			832
Loans Collectively Evaluated For Impairment [Member] | Risk Code 6 - Substandard [Member] | Home Equity Lines And Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	3			2
Loans Collectively Evaluated For Impairment [Member] | Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	1,785			1,350
Loans Collectively Evaluated For Impairment [Member] | Unallocated [Member] | Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 1,785			$ 1,350