Premises and Equipment Text (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation	$ 10,694	$ 8,106	$ 6,838
Rent expense	$ 21,300	$ 21,400	$ 19,600