Premises and Equipment (Schedule of Premises and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 141,911	$ 141,281
Less: accumulated depreciation and amortization	(46,240)	(38,178)
Property, Plant and Equipment, Net, Total	95,671	103,103
Land [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	29,864	29,991
Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	69,980	71,908
Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment	$ 42,067	$ 39,382