Allowance For Loan Losses (Summary Of Allowance Amount For Loans Individually And Collectively Evaluated For Impairment) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	$ 1,347		$ 243	$ 997
Allowance for Loan Losses, Collectively Evaluated For Impairment	16,887		16,446	15,795
Allowance for Loan Losses, Balance	18,234	$ 17,147	16,689	16,792	$ 16,415	$ 14,992
Loans, Individually Evaluated For Impairment	22,028		23,447	26,963
Loans, Collectively Evaluated For Impairment	1,471,999		1,376,317	1,375,299
Loans, Balance	1,494,027		1,399,764	1,402,262
Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	1,347		243	997
Allowance for Loan Losses, Collectively Evaluated For Impairment	14,212		13,875	14,090
Allowance for Loan Losses, Balance	15,559	13,791	14,118	15,087	14,562	12,774
Loans, Individually Evaluated For Impairment	20,743		22,513	26,206
Loans, Collectively Evaluated For Impairment	1,269,777		1,175,317	1,175,000
Loans, Balance	1,290,520		1,197,830	1,201,206
Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	563		391	376
Allowance for Loan Losses, Balance	563	509	391	376	349	457
Loans, Individually Evaluated For Impairment	1,285		934	757
Loans, Collectively Evaluated For Impairment	202,222		201,000	200,299
Loans, Balance	203,507		201,934	201,056
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	2,112		2,180	1,329
Allowance for Loan Losses, Balance	2,112	2,847	2,180	1,329	1,504	1,761
Builder & Developer [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	51		0	200
Allowance for Loan Losses, Collectively Evaluated For Impairment	2,963		3,388	3,750
Allowance for Loan Losses, Balance	3,014	2,899	3,388	3,950	3,511	2,384
Loans, Individually Evaluated For Impairment	415		2,673	5,783
Loans, Collectively Evaluated For Impairment	162,187		181,729	190,828
Loans, Balance	162,602		184,402	196,611
Commercial Real Estate Investor [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		243	243
Allowance for Loan Losses, Collectively Evaluated For Impairment	2,744		2,770	2,958
Allowance for Loan Losses, Balance	2,744	2,695	3,013	3,201	3,073	2,870
Loans, Individually Evaluated For Impairment	4,966		5,645	5,747
Loans, Collectively Evaluated For Impairment	214,458		225,182	240,250
Loans, Balance	219,424		230,827	245,997
Residential Real Estate Investor [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	154
Allowance for Loan Losses, Collectively Evaluated For Impairment	2,494		2,505	2,378
Allowance for Loan Losses, Balance	2,494	2,424	2,505	2,532	2,458	2,517
Loans, Individually Evaluated For Impairment	2,176		1,210	1,716
Loans, Collectively Evaluated For Impairment	232,950		208,204	209,732
Loans, Balance	235,126		209,414	211,448
Hotel/Motel [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	810		637	669
Allowance for Loan Losses, Balance	810	764	637	669	662	807
Loans, Individually Evaluated For Impairment	0		0	0
Loans, Collectively Evaluated For Impairment	86,815		63,195	66,291
Loans, Balance	86,815		63,195	66,291
Wholesale & Retail [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	757		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	957		909	879
Allowance for Loan Losses, Balance	1,714	938	909	879	845	803
Loans, Individually Evaluated For Impairment	8,164		7,912	7,046
Loans, Collectively Evaluated For Impairment	97,785		95,128	91,327
Loans, Balance	105,949		103,040	98,373
Manufacturing [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	539		0	400
Allowance for Loan Losses, Collectively Evaluated For Impairment	787		592	561
Allowance for Loan Losses, Balance	1,326	645	592	961	906	307
Loans, Individually Evaluated For Impairment	3,244		3,840	4,522
Loans, Collectively Evaluated For Impairment	81,197		58,670	54,439
Loans, Balance	84,441		62,510	58,961
Agriculture [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	547		431	416
Allowance for Loan Losses, Balance	547	471	431	416	673	619
Loans, Individually Evaluated For Impairment	661		315	329
Loans, Collectively Evaluated For Impairment	64,859		59,616	57,598
Loans, Balance	65,520		59,931	57,927
Residential Mortgages [Member] \| Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	122		108	105
Allowance for Loan Losses, Balance	122	114	108	105	94	85
Loans, Individually Evaluated For Impairment	550		247	93
Loans, Collectively Evaluated For Impairment	82,213		79,078	79,895
Loans, Balance	82,763		79,325	79,988
Home Equity [Member] \| Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	283		217	198
Allowance for Loan Losses, Balance	283	203	217	198	182	179
Loans, Individually Evaluated For Impairment	493		452	360
Loans, Collectively Evaluated For Impairment	96,808		97,498	95,123
Loans, Balance	97,301		97,950	95,483
Other [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	2,910		2,643	2,479
Allowance for Loan Losses, Balance	2,910	2,955	2,643	2,479	2,434	2,467
Loans, Individually Evaluated For Impairment	1,117		918	1,063
Loans, Collectively Evaluated For Impairment	329,526		283,593	264,535
Loans, Balance	330,643		284,511	265,598
Other [Member] \| Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses, Individually Evaluated For Impairment	0		0	0
Allowance for Loan Losses, Collectively Evaluated For Impairment	158		66	73
Allowance for Loan Losses, Balance	158	$ 192	66	73	$ 73	$ 193
Loans, Individually Evaluated For Impairment	242		235	304
Loans, Collectively Evaluated For Impairment	23,201		24,424	25,281
Loans, Balance	$ 23,443		$ 24,659	$ 25,585

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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