Loans (Aging Of The Recorded Investment In Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 3,226,325	$ 3,105,036
Nonaccrual - With No Allowance for Credit Loss	1,235	1,235
Total Past Due Loans & Nonaccrual Loans	2,348	1,695
Current	3,223,977	3,103,341
Total Loans	3,226,325	3,105,036
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans	103,870	90,386
Total Past Due Loans & Nonaccrual Loans	3	128
Current	103,867	90,258
Total Loans	103,870	90,386
SBA Paycheck Protection Program [Member]
Financing Receivable, Past Due [Line Items]
Loans	12,377	30,534
Total Past Due Loans & Nonaccrual Loans	209	259
Current	12,168	30,275
Total Loans	12,377	30,534
Commercial Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Total Loans	1,870,546	1,736,612
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Past Due [Line Items]
Loans	942,880	864,207
Current	942,880	864,207
Total Loans	942,880	864,207
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Past Due [Line Items]
Loans	734,259	700,872
Current	734,259	700,872
Total Loans	734,259	700,872
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Past Due [Line Items]
Loans	193,407	171,533
Current	193,407	171,533
Total Loans	193,407	171,533
Residential Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans	1,237,511
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Past Due [Line Items]
Loans	1,191,691	1,202,374
Nonaccrual - With No Allowance for Credit Loss	1,235	1,235
Total Past Due Loans & Nonaccrual Loans	2,134	1,235
Current	1,189,557	1,201,139
Total Loans	1,191,691	1,202,374
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Loans	45,820	44,139
Total Past Due Loans & Nonaccrual Loans	2
Current	45,818	44,139
Total Loans	45,820	44,139
Consumer And Other [Member]
Financing Receivable, Past Due [Line Items]
Loans	2,021	991
Total Past Due Loans & Nonaccrual Loans		73
Current	2,021	918
Total Loans	2,021	991
30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	1,111	460
30 to 59 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Loans	3	128
30 to 59 Days Past Due [Member] | SBA Paycheck Protection Program [Member]
Financing Receivable, Past Due [Line Items]
Loans	209	259
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Past Due [Line Items]
Loans	899
30 to 59 Days Past Due [Member] | Consumer And Other [Member]
Financing Receivable, Past Due [Line Items]
Loans		$ 73
60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans	2
60 to 89 Days Past Due [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Loans	$ 2