Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 161,190	$ 152,997
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	9,924	9,290
Provision for credit losses	12,817	10,631
Securities premium amortization, net	34,041	40,376
Gain on sale of securities and other assets, net	(181)	(735)
Deferred federal income tax benefit	1,011	1,789
Stock-based compensation	3,434	3,033
Net tax benefit from stock-based compensation	220	269
Change in loans held-for-sale	(5,754)	(312)
Change in other assets	(8,218)	(371)
Change in other liabilities	16,686	9,126
Total adjustments	63,980	73,096
Net cash provided by operating activities	225,170	226,093
Activity in available-for-sale securities:
Sales	0	320,419
Maturities	4,536,702	333,273
Purchases	(4,351,769)	(3,322)
Net increase in loans held-for-investment	(574,867)	(553,762)
Purchases of bank premises, equipment and software	(11,946)	(13,386)
Proceeds from sale of bank premises and equipment and other assets	1,555	3,740
Net cash provided by (used in) investing activities	(400,325)	86,962
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in noninterest-bearing deposits	(132,443)	(584,235)
Net increase in interest-bearing deposits	750,004	295,250
Net increase (decrease) in repurchase agreements and borrowings	(320,546)	109,036
Common stock transactions:
Proceeds from stock option exercises/stock unit conversions/restricted stock activity	2,387	1,483
Dividends paid	(77,174)	(74,247)
Repurchases of stock		(2,735)
Net cash provided by (used in) financing activities	222,228	(255,448)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	47,073	57,607
CASH AND CASH EQUIVALENTS, beginning of period	536,591	330,678
CASH AND CASH EQUIVALENTS, end of period	583,664	388,285
SUPPLEMENTAL INFORMATION AND NONCASH TRANSACTIONS:
Interest paid	153,215	87,127
Federal income taxes paid	31,173	35,529
Investment securities purchased not settled	5,416	2,500
Transfer of loans to other real estate	$ 1,156	$ 190