Loans (Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	$ 34,051	$ 29,768	$ 29,289	$ 30,838
Chargeoffs	1,298	237	2,135	1,284
Recoveries	39	11	300	23
Provision (Credit) for Credit Losses		314	2,450	279
Allowance for credit losses, ending balance	32,792	29,856	32,792	29,856
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	1,593	1,201	1,493	1,158
Chargeoffs	309	127	1,124	492
Recoveries	38	10	295	18
Provision (Credit) for Credit Losses	93	285	995	685
Allowance for credit losses, ending balance	1,415	1,369	1,415	1,369
SBA Paycheck Protection Program [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	249
Provision (Credit) for Credit Losses	1		250
Allowance for credit losses, ending balance	250		250
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	8,856	6,730	7,151	5,851
Chargeoffs	298		298
Provision (Credit) for Credit Losses	132	89	778	968
Allowance for credit losses, ending balance	8,690	6,819	8,690	6,819
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	3,860	3,440	3,498	3,783
Chargeoffs	502		502
Recoveries	1		1
Provision (Credit) for Credit Losses	584	(51)	993	(394)
Allowance for credit losses, ending balance	3,943	3,389	3,943	3,389
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	1,622	828	921	743
Provision (Credit) for Credit Losses		230	(77)	315
Allowance for credit losses, ending balance	1,622	1,058	1,622	1,058
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	17,384	17,148	15,698	18,844
Chargeoffs	156		175	433
Recoveries			2	1
Provision (Credit) for Credit Losses	(913)	(447)	(566)	(1,711)
Allowance for credit losses, ending balance	16,315	16,701	16,315	16,701
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	482	397	515	410
Chargeoffs	33	109	33	358
Provision (Credit) for Credit Losses	105	218	78	454
Allowance for credit losses, ending balance	554	506	554	506
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance	5	24	13	49
Chargeoffs		1	3	1
Recoveries		1	2	4
Provision (Credit) for Credit Losses	(2)	(10)	(1)	(38)
Allowance for credit losses, ending balance	$ 3	$ 14	3	$ 14
As Reported [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			2,888
As Reported [Member] | Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			(244)
As Reported [Member] | Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			1,059
As Reported [Member] | Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			(47)
As Reported [Member] | Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			778
As Reported [Member] | Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			1,356
As Reported [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			(6)
As Reported [Member] | Consumer And Other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning balance			$ (8)