Premises, Furniture, and Equipment (Schedule of Premises, Furniture and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	$ 131,468	$ 100,519
Less: Accumulated Depreciation	(50,841)	(46,273)
Total	80,627	54,246
Depreciation expense	4,739	3,933	$ 3,774
Land
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	17,368	11,541
Buildings and Improvements
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	79,139	60,076
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	$ 34,961	$ 28,902