Fair Values of Assets and Liabilities - Schedule of Changes In Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Municipal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 121,607	$ 86,237
Net income	0	0
Other comprehensive income or loss	(5,078)	(1,988)
Purchases	15,282	8,384
Settlements	(9,967)	(4,414)
Net transfers into Level 3	0	0
Ending balance	121,844	88,219
Mortgage loans held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	60,399	26,835
Net income	973	67
Other comprehensive income or loss	0	0
Purchases	0	0
Settlements	(24,601)	(10,340)
Net transfers into Level 3	19,553	17,164
Ending balance	56,324	33,726
Loans held-for- investment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	34,896	60,670
Net income	271	(317)
Other comprehensive income or loss	0	0
Purchases	0	0
Settlements	(4,947)	(15,803)
Net transfers into Level 3	3,782	4,767
Ending balance	34,002	49,317
Mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	203,788	192,456
Net income	(7,481)	8,588
Other comprehensive income or loss	0	0
Purchases	0	0
Settlements	0	0
Net transfers into Level 3	0	0
Ending balance	196,307	201,044
Derivative assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,950	4,510
Net income	3,543	1,702
Other comprehensive income or loss	0	0
Purchases	0	0
Settlements	0	0
Net transfers into Level 3	0	0
Ending balance	$ 5,493	$ 6,212