Loan Servicing (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]
Serviced sold mortgage loans	$ 1,934,000,000	$ 2,051,000,000	$ 2,132,000,000
Serviced sold mortgage loans with recourse	2,900,000	3,200,000	3,300,000
Mortgage loans sold with recourse, reserve	54,000	59,000
Escrow Deposit	$ 19,200,000	$ 17,900,000
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	$ 10,300,000	$ 15,295,000	29,812,000
Bank Servicing [Member] | Real Estate Loan [Member]
Servicing Assets at Fair Value [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	$ 5,200,000	$ 5,400,000	$ 5,300,000
Minimum
Servicing Assets at Fair Value [Line Items]
Mortgage servicing rights, constant prepayment speeds	6.12%	6.96%
Maximum
Servicing Assets at Fair Value [Line Items]
Mortgage servicing rights, constant prepayment speeds	27.50%	19.14%
Mortgages [Member]
Servicing Assets at Fair Value [Line Items]
Servicing Asset at Amortized Cost, Fair Value	$ 16,700,000	$ 17,400,000