Loans (Aging Of The Recorded Investment In Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Nonaccrual - With No Allowance for Credit Loss	$ 6,964	$ 888
Total Past Due Loans & Nonaccrual Loans	7,574	3,816
Current	3,144,887	3,184,433
Loans	3,152,461	3,188,249
Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due Loans & Nonaccrual Loans	600	196
Current	104,073	103,683
Loans	104,673	103,879
SBA Paycheck Protection Program [Member]
Financing Receivable, Past Due [Line Items]
Current	165,704
Loans	165,704
Commercial Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Loans	1,351,542	1,401,289
Commercial Mortgages [Member] | Multifamily Loan [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual - With No Allowance for Credit Loss	1,318
Total Past Due Loans & Nonaccrual Loans	1,318
Current	796,342	835,013
Loans	797,660	835,013
Commercial Mortgages [Member] | Other Loan [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual - With No Allowance for Credit Loss	2,938
Total Past Due Loans & Nonaccrual Loans	2,938
Current	431,082	447,484
Loans	434,020	447,484
Commercial Mortgages [Member] | Owner-occupied Loan [Member]
Financing Receivable, Past Due [Line Items]
Current	119,862	118,792
Loans	119,862	118,792
Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual - With No Allowance for Credit Loss	2,064	888
Total Past Due Loans & Nonaccrual Loans	2,064	3,204
Current	1,468,117	1,618,215
Loans	1,470,181	1,621,419
Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Nonaccrual - With No Allowance for Credit Loss	644
Total Past Due Loans & Nonaccrual Loans	653	414
Current	58,292	58,817
Loans	58,945	59,231
Consumer And Other [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due Loans & Nonaccrual Loans	1	2
Current	1,415	2,429
Loans	1,416	2,431
30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	278	2,514
30 to 59 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Past Due	268	196
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Closed-end [Member]
Financing Receivable, Past Due [Line Items]
Past Due		2,316
30 to 59 Days Past Due [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Past Due	9
30 to 59 Days Past Due [Member] | Consumer And Other [Member]
Financing Receivable, Past Due [Line Items]
Past Due	1	2
60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Past Due	332	414
60 to 89 Days Past Due [Member] | Commercial And Industrial [Member]
Financing Receivable, Past Due [Line Items]
Past Due	$ 332
60 to 89 Days Past Due [Member] | Residential Mortgages [Member] | Revolving Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Past Due		$ 414