Loans and Allowance for Loan and Lease Losses (Classes Of The Loan Portfolio Summarized By The Aggregate Risk Rating) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	$ 1,798,149	$ 1,762,756	$ 1,646,686
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	64,610	68,271	68,436
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	1,769,360	1,732,486
Pass [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	64,568	68,224
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	11,689	12,039
Special Mention [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	10
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	17,100	18,231
Substandard [Member] | Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	32	47
Commercial Portfolio [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount			285,766
Commercial Portfolio [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	351,339	339,147
Commercial Portfolio [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	939,995	929,138	868,498
Commercial Portfolio [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	205,248	181,690	162,013
Commercial Portfolio [Member] | Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	338,713	326,573
Commercial Portfolio [Member] | Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	925,303	913,001
Commercial Portfolio [Member] | Pass [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	205,209	181,650
Commercial Portfolio [Member] | Special Mention [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	9,951	9,558
Commercial Portfolio [Member] | Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	1,673	2,426
Commercial Portfolio [Member] | Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	2,675	3,016
Commercial Portfolio [Member] | Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	13,019	13,711
Commercial Portfolio [Member] | Substandard [Member] | Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	39	40
Residential Portfolio [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	230,047	236,724	252,455
Residential Portfolio [Member] | Pass [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	228,657	235,252
Residential Portfolio [Member] | Special Mention [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	55	55
Residential Portfolio [Member] | Substandard [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	1,335	1,417
Consumer Portfolio [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	6,910	7,786	$ 9,518
Consumer Portfolio [Member] | Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and leases receivable, gross, carrying amount	$ 6,910	$ 7,786