Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
OPERATING ACTIVITIES
Net income (loss)	$ (475,631)	$ 104,374
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	30,952	34,863
Provision for credit losses	50,708	33,453
Loss on sale of investments	801,492	28,393
Net amortization of investment securities and assets	10,297	13,104
Net amortization on borrowings	158	114
Stock-based compensation expense	12,538	8,867
Gain on sale of closed branches	(152)	0
Gain on sale of foreclosed assets and other real estate owned	(506)	(911)
Gain on sale of mortgage loans held for sale	(5,998)	(6,503)
Loss on sale of loans	22	234
Loss on early extinguishment of debt	565	0
Deferred income taxes	(166,587)	(3,254)
Income from bank owned life insurance	(11,949)	(11,798)
Originations of mortgage loans held for sale	(203,824)	(211,421)
Proceeds from sale of mortgage loans held for sale	205,732	219,027
Changes in assets and liabilities:
Interest receivable	18,860	(3,270)
Assets held in trading accounts	(12,695)	0
Other assets	60,904	65,650
Accrued interest and other liabilities	32,343	74,820
Income taxes payable	(13,390)	(2,683)
Net cash provided by operating activities	333,839	343,059
INVESTING ACTIVITIES
Net change in loans	(315,554)	(519,391)
Proceeds from sale of loans	97,863	6,099
Proceeds from sale of closed branches	16,595	0
Purchases of premises and equipment, net	(28,155)	(34,935)
Proceeds from sale of foreclosed assets and other real estate owned	10,316	5,100
Proceeds from sale of available-for-sale securities	2,363,220	251,517
Proceeds from maturities of available-for-sale securities	278,783	205,164
Purchases of available-for-sale securities	(581,732)	0
Proceeds from maturities of held-to-maturity securities	41,009	62,460
Purchases of held-to-maturity securities	0	(1,000)
Purchases of bank owned life insurance	(15,697)	0
Surrender of bank owned life insurance	19,025	2,201
Proceeds from bank owned life insurance death benefits	1,055	1,376
Net cash provided by (used in) investing activities	1,886,728	(21,409)
FINANCING ACTIVITIES
Net change in deposits	(2,048,017)	(309,544)
Proceeds from issuance of other borrowed funds	1,480,000	2,650,000
Proceeds from issuance of subordinated notes	321,234	0
Repayments of other borrowed funds	(2,206,540)	(2,576,488)
Repayments of subordinated debt	(37,000)	0
Dividends paid on common stock	(84,282)	(79,055)
Net change in federal funds purchased and securities sold under agreements to repurchase	(14,761)	(16,898)
Issuance of common stock	327,431	0
Net shares cancelled under stock compensation plans	(3,228)	(1,325)
Shares issued under employee stock purchase plan	836	970
Net cash used in financing activities	(2,264,327)	(332,340)
DECREASE IN CASH AND CASH EQUIVALENTS	(43,760)	(10,690)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	687,377	614,092
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 643,617	$ 603,402