Premises and Equipment (Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 74,969	$ 83,053
Accumulated depreciation and amortization	(33,133)	(40,558)
Premises and equipment, net	41,836	42,495
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	46,856	47,548
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	18,915	26,288
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 9,198	$ 9,217