Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 265,380	$ 222,028
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and core deposit intangibles amortization	16,804	16,915
Provision for credit losses	0	9,066
Net amortization of premium on investments	9,953	11,653
Net gain on sale of investment securities		(11,021)
Net gain on sale of other real estate and repossessed assets	(252)	(107)
Net (gain) loss on sale or write down of premises and equipment	(1,179)	938
Net accretion of discount on loans	(6,416)	(9,051)
Net amortization of premium on deposits	(11)	(93)
Net gain on sale of loans	(1,976)	(1,358)
Proceeds from sale of loans held for sale	79,067	63,974
Originations of loans held for sale	(72,929)	(66,833)
Stock based compensation expense	6,059	6,513
Decrease in accrued interest receivable and other assets	50,011	17,168
(Decrease) increase in accrued interest payable and other liabilities	(68,162)	144,102
Net cash provided by operating activities	276,349	403,894
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities, sales and principal paydowns of held to maturity securities	754,742	990,755
Purchase of held to maturity securities	(274,634)	(28,826)
Proceeds from maturities, sales and principal paydowns of available for sale securities	10,005,257	11,199,310
Purchase of available for sale securities	(10,008,602)	(11,020,422)
Originations of Warehouse Purchase Program loans	(7,611,180)	(6,759,124)
Proceeds from pay-offs of Warehouse Purchase Program loans	7,404,643	6,499,966
Net decrease decrease in loans held for investment	147,813	171,972
Purchase of bank premises and equipment	(13,490)	(11,888)
Proceeds from sale of bank premises, equipment and other real estate	6,801	1,037
Proceeds from insurance claims	1,794	1,049
Net cash provided by the purchase of Lone Star State Bancshares, Inc.		169,855
Net cash provided by investing activities	413,144	1,213,684
CASH FLOWS FROM FINANCING ACTIVITIES:
Net decrease in noninterest-bearing deposits	(371,781)	(475,810)
Net decrease in interest-bearing deposits	(536,135)	(11,213)
Net (repayments) proceeds from other short-term borrowings	(300,000)	175,000
Net decrease in securities sold under repurchase agreements	(38,341)	(75,588)
Repurchase of common stock		(74,766)
Payments of cash dividends	(110,513)	(105,776)
Net cash used in financing activities	(1,356,770)	(568,153)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(667,277)	1,049,425
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	1,972,467	458,413
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,305,190	1,507,838
NONCASH ACTIVITIES:
Acquisition of real estate through foreclosure of collateral	6,853	3,897
SUPPLEMENTAL INFORMATION:
Income taxes paid	160,444	28,344
Interest paid	$ 261,538	$ 203,089