Leases (Balance Sheet Classification) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease assets	$ 109,032
Total lease assets	117,176
Present value of lease liabilities	117,448
Finance lease liabilities	5,540
Total lease liabilities	122,988
Operating lease right-of use assets
Lessee, Lease, Description [Line Items]
Operating lease assets	109,032
Premises and equipment
Lessee, Lease, Description [Line Items]
Finance lease assets	8,144
Operating lease liabilities
Lessee, Lease, Description [Line Items]
Present value of lease liabilities	117,448
Long-term debt and finance lease liabilities
Lessee, Lease, Description [Line Items]
Finance lease liabilities	$ 5,540