Loans (Loans Outstanding By Class Of Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	$ 3,226,325	$ 3,105,036
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	103,870	90,386
SBA Paycheck Protection Program [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	12,377	30,534
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	942,880	864,207
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	734,259	700,872
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	193,407	171,533
Residential Mortgages [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	1,237,511
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	1,191,691	1,202,374
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	45,820	44,139
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans outstanding	$ 2,021	$ 991