Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 360,501	$ 338,741
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,128	24,530
Provision for credit losses	38,038	40,255
Gain on other real estate and foreclosed assets	(715)	(1,826)
Deferred tax expense	16,342	4,640
Increase cash surrender value of life insurance contracts	(17,975)	(21,116)
Loss (gain) loss on disposal of assets	257	(1,365)
Net (increase) decrease in loans held for sale	(11,082)	1,614
Net amortization of securities premium/discount	9,963	10,211
Amortization of intangible assets	7,331	7,207
Stock-based compensation expense	18,404	17,171
Net change in derivative collateral liability	(30,469)	(31,172)
Net decrease in interest payable and other liabilities	(10,415)	(781)
Net (increase) decrease in other assets	(13,314)	52,594
Other, net	778	(6,520)
Net cash provided by operating activities	388,772	434,183
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities of securities available for sale	302,056	293,734
Purchases of securities available for sale	(718,792)	(542,759)
Proceeds from maturities of securities held to maturity	231,062	203,433
Payments received (made) to terminate hedge instruments	2,270	(13,730)
Net decrease (increase) in short-term investments	28,401	(168,149)
Net (purchases) redemption of Federal Home Loan Bank stock	(47,822)	122,528
Proceeds from sales of loans and leases	80,239	100,518
Net (increase) decrease in loans	(425,959)	307,662
Purchases of property and equipment	(11,578)	(7,500)
Net cash paid in business acquisition	(112,071)
Proceeds from sales of other real estate and foreclosed assets	24,364	5,695
Other, net	(430)	(1,153)
Net cash (used in) provided by investing activities	(648,260)	300,279
CASH FLOWS FROM FINANCING ACTIVITIES:
Net decrease in deposits	(833,101)	(707,154)
Net increase in short-term borrowings	1,252,505	111,115
Dividends paid	(116,593)	(96,153)
Payroll tax remitted on net share settlement of equity awards	(6,761)	(6,880)
Proceeds from dividend reinvestment and stock purchase plans	3,352	3,095
Repurchase of common stock	(100,242)	(29,811)
Net cash provided by (used in) financing activities	199,160	(725,788)
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	(60,328)	8,674
CASH AND DUE FROM BANKS, BEGINNING	574,910	561,202
CASH AND DUE FROM BANKS, ENDING	514,582	569,876
SUPPLEMENTAL INFORMATION FOR NON-CASH INVESTING AND FINANCING ACTIVITIES
Assets acquired in settlement of loans	$ 12,063	$ 28,010