Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 119,504	$ 108,612
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,792	8,176
Provision for credit losses	10,462	12,968
Gain on other real estate and foreclosed assets	(446)	(364)
Deferred tax expense (benefit)	13,364	(2,314)
Increase cash surrender value of life insurance contracts	(4,119)	(8,851)
(Gain) loss on disposal of assets	34	(1,430)
Net (increase) decrease in loans held for sale	(4,703)	9,633
Net amortization of securities premium/discount	3,405	3,421
Amortization of intangible assets	2,113	2,526
Stock-based compensation expense	5,921	5,691
Net change in derivative collateral liability	(15,482)	10,297
Net decrease in interest payable and other liabilities	(39,021)	(21,324)
Net decrease in other assets	4,164	40,643
Other, net	1,194	(1,013)
Net cash provided by operating activities	104,182	166,671
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities of securities available for sale	92,303	82,667
Purchases of securities available for sale	(155,951)	(121,652)
Proceeds from maturities of securities held to maturity	72,797	28,414
Net decrease in short-term investments	98,257	188,063
Net redemption of Federal Home Loan Bank stock	2,194	0
Proceeds from sales of loans and leases	30,245	28,508
Net (increase) decrease in loans	159,669	(86,295)
Purchases of property and equipment	(3,951)	(2,273)
Proceeds from sales of other real estate and foreclosed assets	1,362	1,753
Other, net	(5,679)	618
Net cash provided by investing activities	291,246	119,803
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in deposits	(298,118)	85,847
Net decrease in short-term borrowings	(96,235)	(487,069)
Dividends paid	(39,582)	(26,514)
Payroll tax remitted on net share settlement of equity awards	(6,392)	(6,557)
Proceeds from dividend reinvestment and stock purchase plans	1,083	897
Repurchase of common stock	(20,747)	0
Net cash used in financing activities	(459,991)	(433,396)
NET DECREASE IN CASH AND DUE FROM BANKS	(64,563)	(146,922)
CASH AND DUE FROM BANKS, BEGINNING	574,910	561,202
CASH AND DUE FROM BANKS, ENDING	510,347	414,280
SUPPLEMENTAL INFORMATION FOR NON-CASH INVESTING AND FINANCING ACTIVITIES
Assets acquired in settlement of loans	$ 2,319	$ 591