Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 61,346	$ 53,397
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	3,500	3,221
Provision for credit losses	3,528	808
Securities premium amortization, net	9,506	11,153
Loss on sale of securities and other assets, net	35	0
Stock-based compensation	1,927	1,129
Net tax benefit from stock-based compensation	59	102
Change in loans held-for-sale	(5,882)	(1,797)
Change in other assets	(1,408)	(4,245)
Change in other liabilities	4,215	11,875
Total adjustments	15,480	22,246
Net cash provided by operating activities	76,826	75,643
Activity in available-for-sale securities:
Sales	0	0
Maturities	5,234,555	3,644,519
Purchases	(5,341,856)	(3,629,507)
Net increase in loans held-for-investment	(32,980)	(80,652)
Purchases of bank premises, equipment and software	(2,115)	(3,912)
Proceeds from sale of bank premises and equipment and other assets	0	41
Net cash used in investing activities	(142,396)	(69,511)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in noninterest-bearing deposits	8,512	(87,439)
Net increase in interest-bearing deposits	359,085	238,947
Net increase (decrease) in repurchase agreements and borrowings	(113,435)	(69,981)
Common stock transactions:
Proceeds from stock option exercises/stock unit conversions/restricted stock activity	804	1,623
Dividends paid	(25,754)	(25,712)
Net cash provided by financing activities	229,212	57,438
NET INCREASE IN CASH AND CASH EQUIVALENTS	163,642	63,570
CASH AND CASH EQUIVALENTS, beginning of period	763,413	536,591
CASH AND CASH EQUIVALENTS, end of period	927,055	600,161
SUPPLEMENTAL INFORMATION AND NONCASH TRANSACTIONS:
Interest paid	48,694	51,106
Transfer of loans to other real estate	$ 0	$ 454