Loans and Leases (Schedule of Change in Allowance for Loan Losses and the Recorded Investment in Loans) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses: Beginning balance				$ 9,747				$ 9,193				$ 9,364	$ 9,747	$ 9,193	$ 9,364
Charge-offs													(1,509)	(1,226)	(1,745)
Recoveries													424	330	124
Provisions	$ 255	$ 320	$ 255	255	$ 325	$ 400	$ 425	300	$ 525	$ 375	$ 225	325	1,085	1,450	1,450
Allowance for Loan Losses: Ending balance	9,747				9,747				9,193				9,747	9,747	9,193
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	908				1,020								908	1,020
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	8,839				8,727								8,839	8,727
Loan Receivables: Ending balance	753,410				728,064								753,410	728,064
Loans Receivable: Ending balance: individually evaluated for impairment	4,665				6,128								4,665	6,128
Loans Receivable: Ending balance: collectively evaluated for impairment	748,745				721,936								748,745	721,936
Unearned lease revenue	903				1,028								903	1,028
Deferred loan costs	3,000				2,600								3,000	2,600
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses: Beginning balance				1,432				1,374				1,075	1,432	1,374	1,075
Charge-offs													(184)	(196)	(143)
Recoveries													32	77	10
Provisions													204	177	432
Allowance for Loan Losses: Ending balance	1,484				1,432				1,374				1,484	1,432	1,374
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	221				41								221	41
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	1,263				1,391								1,263	1,391
Loan Receivables: Ending balance	122,594				126,884								122,594	126,884
Loans Receivable: Ending balance: individually evaluated for impairment	336				180								336	180
Loans Receivable: Ending balance: collectively evaluated for impairment	122,258				126,704								122,258	126,704
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses: Beginning balance				3,901				4,060				4,706	3,901	4,060	4,706
Charge-offs													(597)	(268)	(635)
Recoveries													317	42	47
Provisions													312	67	(58)
Allowance for Loan Losses: Ending balance	3,933				3,901				4,060				3,933	3,901	4,060
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	426				595								426	595
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	3,507				3,306								3,507	3,306
Loan Receivables: Ending balance	235,013				226,368								235,013	226,368
Loans Receivable: Ending balance: individually evaluated for impairment	2,948				3,912								2,948	3,912
Loans Receivable: Ending balance: collectively evaluated for impairment	232,065				222,456								232,065	222,456
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses: Beginning balance				2,548				2,063				1,834	2,548	2,063	1,834
Charge-offs													(398)	(391)	(658)
Recoveries													67	211	67
Provisions													(204)	665	820
Allowance for Loan Losses: Ending balance	2,013				2,548				2,063				2,013	2,548	2,063
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	87				382								87	382
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	1,926				2,166								1,926	2,166
Loan Receivables: Ending balance	210,869				213,112								210,869	213,112
Loans Receivable: Ending balance: individually evaluated for impairment	375				522								375	522
Loans Receivable: Ending balance: collectively evaluated for impairment	210,494				212,590								210,494	212,590
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses: Beginning balance				1,844				1,608				1,622	1,844	1,608	1,622
Charge-offs													(330)	(371)	(309)
Recoveries													8
Provisions													756	607	295
Allowance for Loan Losses: Ending balance	2,278				1,844				1,608				2,278	1,844	1,608
Allowance for Loan Losses: Ending balance: individually evaluated for impairment	174				2								174	2
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	2,104				1,842								2,104	1,842
Loan Receivables: Ending balance	184,934				161,700								184,934	161,700
Loans Receivable: Ending balance: individually evaluated for impairment	1,006				1,514								1,006	1,514
Loans Receivable: Ending balance: collectively evaluated for impairment	183,928				160,186								183,928	160,186
Unallocated [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan Losses: Beginning balance				$ 22				$ 88				$ 127	22	88	127
Provisions													17	(66)	(39)
Allowance for Loan Losses: Ending balance	39				22				$ 88				39	22	$ 88
Allowance for Loan Losses: Ending balance: collectively evaluated for impairment	$ 39				$ 22								$ 39	$ 22