Loans And The Allowance For Loan Losses (Data, At Class Level, Of Credit Quality Indicators Of Certain Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 1,709,361	$ 1,224,997
Total Real Estate Loans [Member] | Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	1,260,857	971,874
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	804,635	742,884
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating, Acceptable Or Better [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	367,159	524,943
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating, Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	325,287	184,657
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating, Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	16,073	24,084
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Corporate Credit Exposure—By Credit Rating, Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	96,116	9,200
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	102,011	97,848
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating, Acceptable Or Better [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	52,162	73,646
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating, Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	21,322	13,380
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating, Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	2,088	8,359
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Construction [Member] | Corporate Credit Exposure—By Credit Rating, Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	26,439	2,463
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Mortgages [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	702,624	645,036
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating, Acceptable Or Better [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	314,997	451,297
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating, Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	303,965	171,277
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating, Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	13,985	15,725
Commercial Real Estate Mortgages [Member] | Total Real Estate Loans [Member] | Mortgages [Member] | Corporate Credit Exposure—By Credit Rating, Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	69,677	6,737
Commercial And Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	448,092	251,197
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating, Acceptable Or Better [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	339,810	165,255
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating, Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	87,414	68,665
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating, Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	5,855	7,631
Commercial And Industrial [Member] | Corporate Credit Exposure—By Credit Rating, Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	15,013	$ 9,646
Commercial And Industrial [Member] | Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Total gross loans	$ 448,092