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		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Municipal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 95,792	$ 114,155	$ 86,237	$ 117,537
Net income	0	0	0	0
Other comprehensive income or loss	968	(1,614)	(1,700)	(6,437)
Purchases	38,490	678	56,556	12,074
Issuances			0
Sales		0	0	0
Settlements	0	0	(5,843)	(9,955)
Net transfers into Level 3	0	0	0	0
Ending balance	135,250	113,219	135,250	113,219
Mortgage loans held-for-sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	40,545	29,406	26,835	48,655
Net income	126	626	398	1,494
Other comprehensive income or loss	0	0	0	0
Purchases	0	0	0	0
Issuances			0
Sales		0	0	0
Settlements	(8,078)	(18,454)	(28,687)	(61,046)
Net transfers into Level 3	26,470	13,609	60,517	36,084
Ending balance	59,063	25,187	59,063	25,187
Loans held-for- investment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	45,721	61,123	60,670	84,165
Net income	381	(260)	130	(515)
Other comprehensive income or loss	0	0	0	0
Purchases	0	0	0	0
Issuances			0
Sales		0	0	0
Settlements	(7,924)	(16,852)	(31,436)	(53,767)
Net transfers into Level 3	6,597	13,950	15,411	28,078
Ending balance	44,775	57,961	44,775	57,961
Mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	204,610	200,692	192,456	230,225
Net income	(18,302)	9,832	(6,148)	10,469
Other comprehensive income or loss	0	0	0	0
Purchases	0	0	0	0
Issuances			0
Sales		0	0	(30,170)
Settlements	0	0	0	0
Net transfers into Level 3	0	0	0	0
Ending balance	186,308	210,524	186,308	210,524
Derivative assets
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	4,795	3,487	4,510	1,711
Net income	347	(971)	632	805
Other comprehensive income or loss	0	0	0	0
Purchases	0	0	0	0
Issuances			0
Sales		0	0	0
Settlements	0	0	0	0
Net transfers into Level 3	0	0	0	0
Ending balance	$ 5,142	$ 2,516	$ 5,142	$ 2,516