Loans and Leases (Loans and Leases Sold) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held-for-sale, reconciliation to cash flow, deductions from held-for-sale	$ 15,079	$ 20,399
Commercial real estate | Non-owner occupied term, net
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held-for-sale, reconciliation to cash flow, deductions from held-for-sale	4,819	4,391
Commercial real estate | Owner occupied term, net
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held-for-sale, reconciliation to cash flow, deductions from held-for-sale	4,710	5,550
Commercial | Term, net
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held-for-sale, reconciliation to cash flow, deductions from held-for-sale	5,441	10,458
Residential | Mortgage, net
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable held-for-sale, reconciliation to cash flow, deductions from held-for-sale	$ 109	$ 0