Loans (Summary Of Loan Risk Ratings By Loan Class) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 1,494,027	$ 1,399,764	$ 1,402,262
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,452,569	1,366,449
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,680	10,122
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,844	18,141
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	12,934	5,052
Total Commercial Related Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,290,520	1,197,830	1,201,206
Total Commercial Related Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,250,357	1,165,489
Total Commercial Related Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,670	10,082
Total Commercial Related Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,752	18,047
Total Commercial Related Loans [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	11,741	4,212
Total Commercial Related Loans [Member] | Builder & Developer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	162,602	184,402	196,611
Total Commercial Related Loans [Member] | Builder & Developer [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	161,351	179,897
Total Commercial Related Loans [Member] | Builder & Developer [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	836	1,832
Total Commercial Related Loans [Member] | Builder & Developer [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	415	581
Total Commercial Related Loans [Member] | Builder & Developer [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	2,092
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	219,424	230,827	245,997
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	214,458	224,822
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	360
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,365	4,339
Total Commercial Related Loans [Member] | Commercial Real Estate Investor [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	601	1,306
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	235,126	209,414	211,448
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	225,570	204,139
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,380	4,065
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,171	711
Total Commercial Related Loans [Member] | Residential Real Estate Investor [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,005	499
Total Commercial Related Loans [Member] | Hotel/Motel [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	86,815	63,195	66,291
Total Commercial Related Loans [Member] | Hotel/Motel [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	86,815	63,195
Total Commercial Related Loans [Member] | Hotel/Motel [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Total Commercial Related Loans [Member] | Hotel/Motel [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Total Commercial Related Loans [Member] | Hotel/Motel [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Total Commercial Related Loans [Member] | Wholesale & Retail [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	105,949	103,040	98,373
Total Commercial Related Loans [Member] | Wholesale & Retail [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	92,858	95,128
Total Commercial Related Loans [Member] | Wholesale & Retail [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,177	254
Total Commercial Related Loans [Member] | Wholesale & Retail [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	97	7,658
Total Commercial Related Loans [Member] | Wholesale & Retail [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7,817	0
Total Commercial Related Loans [Member] | Manufacturing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	84,441	62,510	58,961
Total Commercial Related Loans [Member] | Manufacturing [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	80,629	58,082
Total Commercial Related Loans [Member] | Manufacturing [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	568	588
Total Commercial Related Loans [Member] | Manufacturing [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,375	3,840
Total Commercial Related Loans [Member] | Manufacturing [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,869	0
Total Commercial Related Loans [Member] | Agriculture [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	65,520	59,931	57,927
Total Commercial Related Loans [Member] | Agriculture [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	61,656	57,140
Total Commercial Related Loans [Member] | Agriculture [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3,203	2,476
Total Commercial Related Loans [Member] | Agriculture [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	374	0
Total Commercial Related Loans [Member] | Agriculture [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	287	315
Total Commercial Related Loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	330,643	284,511	265,598
Total Commercial Related Loans [Member] | Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	327,020	283,086
Total Commercial Related Loans [Member] | Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,506	507
Total Commercial Related Loans [Member] | Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	955	918
Total Commercial Related Loans [Member] | Other [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	162	0
Total Consumer Related Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	203,507	201,934	201,056
Total Consumer Related Loans [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	202,212	200,960
Total Consumer Related Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10	40
Total Consumer Related Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	92	94
Total Consumer Related Loans [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,193	840
Total Consumer Related Loans [Member] | Residential Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	82,763	79,325	79,988
Total Consumer Related Loans [Member] | Residential Mortgages [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	82,206	79,068
Total Consumer Related Loans [Member] | Residential Mortgages [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	7	10
Total Consumer Related Loans [Member] | Residential Mortgages [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	83	85
Total Consumer Related Loans [Member] | Residential Mortgages [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	467	162
Total Consumer Related Loans [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	97,301	97,950	95,483
Total Consumer Related Loans [Member] | Home Equity [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	96,808	97,498
Total Consumer Related Loans [Member] | Home Equity [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Total Consumer Related Loans [Member] | Home Equity [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Total Consumer Related Loans [Member] | Home Equity [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	493	452
Total Consumer Related Loans [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	23,443	24,659	$ 25,585
Total Consumer Related Loans [Member] | Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	23,198	24,394
Total Consumer Related Loans [Member] | Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3	30
Total Consumer Related Loans [Member] | Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9	9
Total Consumer Related Loans [Member] | Other [Member] | Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 233	$ 226