Goodwill and Intangible Assets, Mortgage Servicing Rights Roll-Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2022	Dec. 31, 2019
Summary of changes in balance of mortgage servicing rights asset and mortgage servicing rights valuation allowance
Servicing Asset at Amortized Cost		$ 56,682	$ 59,967		$ 67,607
Cumulative effect of accounting methodology change				$ 2,296
Mortgage servicing rights, net(a)	$ 77,351	57,158
Servicing Asset at Fair Value, Additions	7,279	16,151	13,667
Servicing Asset at Fair Value, Disposals	(9,350)
Servicing Asset at Fair Value, Changes in Fair Value Resulting from Changes in Valuation Inputs or Changes in Assumptions	5,715
Servicing Asset at Fair Value, Other Changes in Fair Value	16,549
Mortgage servicing rights:
Servicing Asset at Amortized Cost		56,682	59,967		$ 67,607
Additions from acquisition		0	1,357
Additions		16,151	13,667
Amortization		(19,436)	(22,664)
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance at beginning of year	(1,820)	(18,006)	(302)
(Additions) recoveries, net		16,186	(17,704)
Valuation allowance at end of year		(1,820)	(18,006)
Equity securities without readily determinable fair values		54,862	41,961
Fair value of mortgage servicing rights		57,259	41,990
Portfolio of residential mortgage loans serviced for others (“servicing portfolio”)	$ 6,711,820	$ 6,994,834	$ 7,743,956
Mortgage servicing rights, net to servicing portfolio	1.15%	0.78%	0.54%
Mortgage servicing rights expense (a)		$ 3,250	$ 40,369