Loans And Leases (Schedule Of Change In Allowance For Loan Losses And The Recorded Investment In Loans) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses: Beginning balance	$ 9,527	$ 9,406	$ 9,193	$ 9,364	$ 9,364
Charge-offs	(120)	(439)	(664)	(1,035)	(1,745)
Recoveries	137	14	290	102	124
Provisions	400	375	1,125	925	1,450
Allowance for Loan Losses: Ending balance	9,944	9,356	9,944	9,356	9,193
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	1,391		1,391		1,179
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	8,553		8,553		8,014
Loan Receivables: Ending balance	700,888		700,888		637,960
Loans Receivable: Ending balance: individually evaluated for impairment	6,991		6,991		6,894
Loans Receivable: Ending balance: collectively evaluated for impairment	693,897		693,897		631,066
Unearned lease revenue	969		969		639
Deferred loan costs	2,500		2,500		2,100
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses: Beginning balance	1,341	1,383	1,374	1,075	1,075
Charge-offs	(9)	(46)	(106)	(76)	(143)
Recoveries	13	2	67	5	10
Provisions	(11)	60	(1)	395	432
Allowance for Loan Losses: Ending balance	1,334	1,399	1,334	1,399	1,374
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	30		30		196
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	1,304		1,304		1,178
Loan Receivables: Ending balance	121,788		121,788		113,601
Loans Receivable: Ending balance: individually evaluated for impairment	193		193		249
Loans Receivable: Ending balance: collectively evaluated for impairment	121,595		121,595		113,352
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses: Beginning balance	3,814	4,510	4,060	4,706	4,706
Charge-offs	(36)	(48)	(166)	(416)	(635)
Recoveries	3	3	36	44	47
Provisions	249	(363)	100	(232)	(58)
Allowance for Loan Losses: Ending balance	4,030	4,102	4,030	4,102	4,060
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	919		919		921
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	3,111		3,111		3,139
Loan Receivables: Ending balance	218,222		218,222		208,462
Loans Receivable: Ending balance: individually evaluated for impairment	4,685		4,685		4,992
Loans Receivable: Ending balance: collectively evaluated for impairment	213,537		213,537		203,470
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses: Beginning balance	2,629	1,939	2,063	1,834	1,834
Charge-offs	(73)	(345)	(275)	(505)	(658)
Recoveries	121	9	187	53	67
Provisions	(3)	366	699	587	820
Allowance for Loan Losses: Ending balance	2,674	1,969	2,674	1,969	2,063
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	395		395		25
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	2,279		2,279		2,038
Loan Receivables: Ending balance	202,413		202,413		169,065
Loans Receivable: Ending balance: individually evaluated for impairment	567		567		579
Loans Receivable: Ending balance: collectively evaluated for impairment	201,846		201,846		168,486
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses: Beginning balance	1,722	1,511	1,608	1,622	1,622
Charge-offs	(2)		(117)	(38)	(309)
Recoveries
Provisions	57	288	286	215	295
Allowance for Loan Losses: Ending balance	1,777	1,799	1,777	1,799	1,608
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	47		47		37
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	1,730		1,730		1,571
Loan Receivables: Ending balance	158,465		158,465		146,832
Loans Receivable: Ending balance: individually evaluated for impairment	1,546		1,546		1,074
Loans Receivable: Ending balance: collectively evaluated for impairment	156,919		156,919		145,758
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan Losses: Beginning balance	21	63	88	127	127
Charge-offs
Recoveries
Provisions	108	24	41	(40)	(39)
Allowance for Loan Losses: Ending balance	129	$ 87	129	$ 87	88
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	$ 129		$ 129		$ 88

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

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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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 deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts 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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Amount of expense related to estimated loss from loan and lease transactions.

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