Loan Servicing (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Servicing Assets at Fair Value [Line Items]
Serviced sold mortgage loans	$ 2,051,000,000	$ 2,132,000,000	$ 1,972,000,000
Serviced sold mortgage loans with recourse	3,200,000	3,300,000	1,700,000
Mortgage loans sold with recourse, reserve	$ 59,000	$ 57,000
Mortgage servicing rights, discount rate	12.00%	12.00%
Bank Servicing [Member]
Servicing Assets at Fair Value [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 15,295,000	$ 29,812,000	37,611,000
Bank Servicing [Member] | Real Estate Loan [Member]
Servicing Assets at Fair Value [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 5,400,000	$ 5,300,000	$ 4,100,000
Minimum
Servicing Assets at Fair Value [Line Items]
Mortgage servicing rights, constant prepayment speeds	6.96%	11.10%
Maximum
Servicing Assets at Fair Value [Line Items]
Mortgage servicing rights, constant prepayment speeds	19.14%	27.90%
Mortgages [Member]
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Amortized Cost, Fair Value	$ 17,400,000	$ 15,300,000