Loans and Allowance for Loan and Lease Losses (Allowance And Recorded Investment In Financing Receivables) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	$ 8,397	$ 7,606
Charge-offs	(41)	(84)
Recoveries	21	19
Provisions	125	125
Allowance for Loan Losses, Ending balance	8,502	7,666
Allowance for loan losses: Ending balance: individually evaluated for impairment	486	639	$ 742
Allowance for loan losses: Ending balance: collectively evaluated for impairment	8,016	7,027	7,655
Loans receivables, Ending balance	1,646,686	1,007,138	1,624,067	$ 1,646,686	$ 1,624,067
Loans receivables: Ending balance: individually evaluated for impairment	4,333	10,690	8,463
Loans Receivable: Ending balance: collectively evaluated for impairment	1,639,521	994,293	1,612,801
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending balance	2,832	2,155	2,803
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	528	423
Charge-offs		(76)
Provisions	(78)	44
Allowance for Loan Losses, Ending balance	450	391
Allowance for loan losses: Ending balance: collectively evaluated for impairment	450	391	528
Loans receivables, Ending balance	68,436	45,165	70,096	68,436	70,096
Loans receivables: Ending balance: individually evaluated for impairment	29	183	30
Loans Receivable: Ending balance: collectively evaluated for impairment	68,403	44,982	70,062
Home Equity [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending balance	4		4
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	2,391	1,795
Recoveries	1
Provisions	51	182
Allowance for Loan Losses, Ending balance	2,443	1,977
Allowance for loan losses: Ending balance: individually evaluated for impairment	205	265	500
Allowance for loan losses: Ending balance: collectively evaluated for impairment	2,238	1,712	1,891
Loans receivables, Ending balance	285,766	198,783	286,518	285,766	286,518
Loans receivables: Ending balance: individually evaluated for impairment	205	4,374	4,527
Loans Receivable: Ending balance: collectively evaluated for impairment	285,532	194,386	281,963
Commercial Portfolio [Member] | Commercial and Industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending balance	29	23	28
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	4,703	4,435
Charge-offs	(11)
Recoveries	18	17
Provisions	321	201
Allowance for Loan Losses, Ending balance	5,031	4,653
Allowance for loan losses: Ending balance: individually evaluated for impairment	243	281	204
Allowance for loan losses: Ending balance: collectively evaluated for impairment	4,788	4,372	4,499
Loans receivables, Ending balance	868,498	560,776	861,369	868,498	861,369
Loans receivables: Ending balance: individually evaluated for impairment	2,827	4,977	2,728
Loans Receivable: Ending balance: collectively evaluated for impairment	864,083	554,356	857,078
Commercial Portfolio [Member] | Commercial Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending balance	1,588	1,443	1,563
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	75	178
Charge-offs	(20)
Provisions	26	5
Allowance for Loan Losses, Ending balance	81	183
Allowance for loan losses: Ending balance: individually evaluated for impairment	38	93	38
Allowance for loan losses: Ending balance: collectively evaluated for impairment	43	90	37
Loans receivables, Ending balance	162,013	73,756	142,173	162,013	142,173
Loans receivables: Ending balance: individually evaluated for impairment	367	487	367
Loans Receivable: Ending balance: collectively evaluated for impairment	161,646	73,269	141,806
Commercial Portfolio [Member] | Lease Financing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending balance		194	53
Loans Receivable: Ending balance: collectively evaluated for impairment		194	53
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	453	428
Charge-offs		(2)
Provisions	24	26
Allowance for Loan Losses, Ending balance	477	452
Allowance for loan losses: Ending balance: collectively evaluated for impairment	477	452	453
Loans receivables, Ending balance	252,455	123,693	253,543	252,455	253,543
Loans receivables: Ending balance: individually evaluated for impairment	905	669	811
Loans Receivable: Ending balance: collectively evaluated for impairment	250,339	122,335	251,524
Residential Portfolio [Member] | Financial Asset Acquired with Credit Deterioration [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivables, Ending balance	1,211	689	1,208
Consumer Portfolio [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	7	3
Charge-offs	(10)	(6)
Recoveries	2	2
Provisions	7	5
Allowance for Loan Losses, Ending balance	6	4
Allowance for loan losses: Ending balance: collectively evaluated for impairment	6	4	7
Loans receivables, Ending balance	9,518	4,771	10,315	$ 9,518	$ 10,315
Loans Receivable: Ending balance: collectively evaluated for impairment	9,518	4,771	10,315
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan and lease losses, Beginning balance	240	344
Provisions	(226)	(338)
Allowance for Loan Losses, Ending balance	14	6
Allowance for loan losses: Ending balance: collectively evaluated for impairment	$ 14	$ 6	$ 240