Loan Servicing (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Transfers and Servicing of Financial Assets [Abstract]
Serviced sold mortgage loans		$ 1,390,000	$ 1,370,000
Serviced sold mortgage loans with recourse	$ 2,400	$ 2,500	$ 2,800
Servicing fees included in other service income	900
Mortgage Loans Sold with Recourse, Reserve	$ 23