Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 128,004	$ 105,882
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	6,462	6,452
Provision for credit losses	6,660	6,695
Securities premium amortization, net	19,416	22,653
(Gain) loss on sale of securities and other assets, net	(171)	56
Deferred federal income tax benefit	11,685	476
Stock-based compensation	3,458	2,179
Net tax benefit from stock-based compensation	200	128
Change in loans held-for-sale	(24,200)	(5,270)
Change in other assets	(29,787)	(4,066)
Change in other liabilities	16,374	9,269
Total adjustments	10,097	38,572
Net cash provided by operating activities	138,101	144,454
Activity in available-for-sale securities:
Maturities	5,397,243	4,330,401
Purchases	(5,596,052)	(4,241,825)
Net increase in loans held-for-investment	(163,111)	(371,161)
Purchases of bank premises, equipment and software	(4,687)	(8,892)
Proceeds from sale of bank premises and equipment and other assets	1,103	56
Net cash used in investing activities	(365,504)	(291,421)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in noninterest-bearing deposits	91,018	(146,554)
Net increase in interest-bearing deposits	258,224	417,411
Net decrease in repurchase agreements and borrowings	(126,840)	(241,428)
Common stock transactions:
Proceeds from stock option exercises/stock unit conversions/restricted stock activity	1,479	1,785
Dividends paid	(51,529)	(51,461)
Net cash provided by (used in) financing activities	172,352	(20,247)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(55,051)	(167,214)
CASH AND CASH EQUIVALENTS, beginning of period	763,413	536,591
CASH AND CASH EQUIVALENTS, end of period	708,362	369,377
SUPPLEMENTAL INFORMATION AND NONCASH TRANSACTIONS:
Interest paid	98,701	99,776
Federal income taxes paid	27,947	19,546
Investment securities purchased not settled	24,965	0
Transfer of loans to other real estate	$ 490	$ 656