Loans and Leases and the Allowance for Loan and Lease Losses (Non-Accrual Loans and Leases) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	$ 11,662
Nonaccrual loans without a related ACL	6,436
Total Nonaccrual Loans	18,098	$ 17,380
Commercial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	4,177
Nonaccrual loans without a related ACL	5,505
Total Nonaccrual Loans	9,682	10,074
Commercial | Commercial and Industrial
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	634
Nonaccrual loans without a related ACL	0
Total Nonaccrual Loans	634	830
Commercial | Commercial Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	3,543
Nonaccrual loans without a related ACL	5,505
Total Nonaccrual Loans	9,048	9,244
Consumer
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	7,485
Nonaccrual loans without a related ACL	931
Total Nonaccrual Loans	8,416	7,306
Consumer | Residential Mortgage
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	3,399
Nonaccrual loans without a related ACL	931
Total Nonaccrual Loans	4,330	4,125
Consumer | Home Equity
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual loans with a related ACL	4,086
Nonaccrual loans without a related ACL	0
Total Nonaccrual Loans	$ 4,086	$ 3,181