Loans and Leases and the Allowance for Loan and Lease Losses (Non-Accrual Loans and Leases) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	$ 14,600
Nonaccrual loans without a related ACL	5,595
Total Nonaccrual Loans	20,195	$ 17,380
Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	4,002
Nonaccrual loans without a related ACL	5,129
Total Nonaccrual Loans	9,131	10,074
Commercial | Commercial and Industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	459
Nonaccrual loans without a related ACL	0
Total Nonaccrual Loans	459	830
Commercial | Commercial Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	3,543
Nonaccrual loans without a related ACL	5,129
Total Nonaccrual Loans	8,672	9,244
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	10,598
Nonaccrual loans without a related ACL	466
Total Nonaccrual Loans	11,064	7,306
Consumer | Residential Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	5,422
Nonaccrual loans without a related ACL	466
Total Nonaccrual Loans	5,888	4,125
Consumer | Home Equity
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	5,176
Nonaccrual loans without a related ACL	0
Total Nonaccrual Loans	$ 5,176	$ 3,181