Allowance For Loan Losses (Summary Of Allowance For Loan Losses By Loan Segment And Class) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 17,147	$ 16,415	$ 16,689	$ 14,992
Charge-offs	(298)	(1,730)	(445)	(1,886)
Recoveries	85	7	190	111
Provision	1,300	2,100	1,800	3,575
Ending Balance	18,234	16,792	18,234	16,792
Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	13,791	14,562	14,118	12,774
Charge-offs	(145)	(1,542)	(146)	(1,688)
Recoveries	63	3	157	97
Provision	1,850	2,064	1,430	3,904
Ending Balance	15,559	15,087	15,559	15,087
Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	509	349	391	457
Charge-offs	(153)	(188)	(299)	(198)
Recoveries	22	4	33	14
Provision	185	211	438	103
Ending Balance	563	376	563	376
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,847	1,504	2,180	1,761
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(735)	(175)	(68)	(432)
Ending Balance	2,112	1,329	2,112	1,329
Builder & Developer [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,899	3,511	3,388	2,384
Charge-offs	(144)	(1,474)	(144)	(1,474)
Recoveries	41	0	59	2
Provision	218	1,913	(289)	3,038
Ending Balance	3,014	3,950	3,014	3,950
Commercial Real Estate Investor [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,695	3,073	3,013	2,870
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	49	128	(269)	331
Ending Balance	2,744	3,201	2,744	3,201
Residential Real Estate Investor [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,424	2,458	2,505	2,517
Charge-offs	(1)	0	(2)	(110)
Recoveries	3	3	77	59
Provision	68	71	(86)	66
Ending Balance	2,494	2,532	2,494	2,532
Hotel/Motel [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	764	662	637	807
Charge-offs	0	0	0	(36)
Recoveries	0	0	0	36
Provision	46	7	173	(138)
Ending Balance	810	669	810	669
Wholesale & Retail [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	938	845	909	803
Charge-offs	0	0	0	0
Recoveries	1	0	3	0
Provision	775	34	802	76
Ending Balance	1,714	879	1,714	879
Manufacturing [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	645	906	592	307
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	681	55	734	654
Ending Balance	1,326	961	1,326	961
Agriculture [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	471	673	431	619
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	76	(257)	116	(203)
Ending Balance	547	416	547	416
Residential Mortgages [Member] \| Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	114	94	108	85
Charge-offs	0	0	(10)	0
Recoveries	9	0	10	5
Provision	(1)	11	14	15
Ending Balance	122	105	122	105
Home Equity [Member] \| Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	203	182	217	179
Charge-offs	(123)	(137)	(123)	(137)
Recoveries	0	0	0	0
Provision	203	153	189	156
Ending Balance	283	198	283	198
Other [Member] \| Total Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,955	2,434	2,643	2,467
Charge-offs	0	(68)	0	(68)
Recoveries	18	0	18	0
Provision	(63)	113	249	80
Ending Balance	2,910	2,479	2,910	2,479
Other [Member] \| Total Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	192	73	66	193
Charge-offs	(30)	(51)	(166)	(61)
Recoveries	13	4	23	9
Provision	(17)	47	235	(68)
Ending Balance	$ 158	$ 73	$ 158	$ 73

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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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 of expense related to estimated loss from loan and lease transactions.

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