Loan Servicing (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Transfers and Servicing of Financial Assets [Abstract]
Serviced sold mortgage loans	$ 1,960,000,000	$ 2,090,000,000.00	$ 1,960,000,000	$ 2,090,000,000.00	$ 2,050,000,000.00
Serviced sold mortgage loans with recourse	3,000,000	3,300,000	3,000,000	3,300,000	3,200,000
Servicing fees included in other service income	1,300,000	$ 1,400,000	3,900,000	$ 4,100,000
Mortgage Loans Sold with Recourse, Reserve	$ 54,000		$ 54,000		$ 59,000