Income Taxes - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Allowance for credit losses and nonperforming assets valuation allowance	$ 233,879	$ 217,731
Net unrealized losses on AFS debt and transferred securities	223,814	246,835
Stock compensation and other accrued compensation	41,118	33,169
Lease liabilities	27,644	32,636
FDIC special assessment charge	16,843	22,212
Basis difference in investments	17,708	28,216
State capital loss and tax credit carryforwards	11,122	266
Nonaccrual loans’ interest income	8,809	7,034
State taxes	5,808	9,885
Other	14,665	10,535
Total deferred tax assets	601,410	608,519
Deferred tax liabilities:
Operating lease right-of-use assets	25,647	30,272
Basis difference in investments	25,587	23,103
Equipment lease financing	10,395	15,564
Prepaid expenses	2,319	2,981
FHLB stock dividends	1,961	1,947
Mortgage servicing assets	1,678	2,102
Other	20,479	13,801
Total deferred tax liabilities	88,066	89,770
Net deferred tax assets	513,344	$ 518,749
State and Local Jurisdiction
Valuation Allowance [Line Items]
Deferred tax assets, capital loss carryforwards	8,000
Deferred tax assets, tax credit carryforwards	$ 3,000