Fair Value Disclosures - Schedule of Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Collateral dependent loans	$ 11,541,912	$ 11,444,216
Fair Value, Nonrecurring
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Collateral dependent loans	24,996		$ 23,868
Mortgage servicing rights	61,916		62,757
Total assets	86,912		86,625
Fair Value, Nonrecurring | Level 1
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Collateral dependent loans	0		0
Mortgage servicing rights	0		0
Total assets	0		0
Fair Value, Nonrecurring | Level 2
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Collateral dependent loans	0		0
Mortgage servicing rights	0		0
Total assets	0		0
Fair Value, Nonrecurring | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Collateral dependent loans	24,996		23,868
Mortgage servicing rights	61,916		62,757
Total assets	$ 86,912		$ 86,625