Leases (Balance Sheet Classification) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 99,973
Total lease assets	107,870
Operating lease liabilities	108,083
Finance lease liabilities	5,169
Total lease liabilities	113,252
Operating lease right-of use assets
Lessee, Lease, Description [Line Items]
Operating lease assets	99,973
Premises and equipment
Lessee, Lease, Description [Line Items]
Finance lease assets	7,897
Operating lease liabilities
Lessee, Lease, Description [Line Items]
Operating lease liabilities	108,083
Long-term debt and finance lease liabilities
Lessee, Lease, Description [Line Items]
Finance lease liabilities	$ 5,169