Loans (Outstanding Loan Modifications) (Details)	Jun. 30, 2020 USD ($) loan
Financing Receivable, Loan Modifications [Line Items]
Number of Loans | loan	775
Outstanding Loan Balance	$ 621,289,000
Accrued Interest	$ 6,237,000
Commercial And Industrial [Member] | 3 Month Deferral Of Principal [Member]
Financing Receivable, Loan Modifications [Line Items]
Number of Loans | loan	274
Outstanding Loan Balance	$ 23,477,000
Accrued Interest	$ 94,000
Commercial And Industrial [Member] | 3 Month Deferral Of Principal And Interest [Member]
Financing Receivable, Loan Modifications [Line Items]
Number of Loans | loan	28
Outstanding Loan Balance	$ 11,832,000
Accrued Interest	$ 161,000
Residential Mortgages [Member] | 3 Month Deferral Of Principal And Interest [Member]
Financing Receivable, Loan Modifications [Line Items]
Number of Loans | loan	284
Outstanding Loan Balance	$ 162,928,000
Accrued Interest	$ 1,429,000
Commercial Mortgages [Member] | 3 Month Deferral Of Principal And Interest [Member]
Financing Receivable, Loan Modifications [Line Items]
Number of Loans | loan	189
Outstanding Loan Balance	$ 423,052,000
Accrued Interest	$ 4,553,000