CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net income	$ 88,930	$ 120,198
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	6,097	7,111
Provision for credit losses	5,117	4,515
Share-based compensation expense	10,884	9,272
Loss on sales and disposals of premises and equipment	6	35
Loss (gain) on sale or write down of other real estate owned	28	(106)
Net (accretion) amortization of discounts/premium on securities	(6,403)	7,289
Net (accretion) of discounts/premiums for acquired loans and deferred loan fees/costs	(6,411)	(8,369)
(Gain) on sale of investment securities available-for-sale	0	(138)
(Gain) on debt extinguishment	(5,067)	0
(Gain) on sales of loans	(65)	(374)
Deferred income tax expense	1,234	2,802
Income from bank owned life insurance, net	(6,977)	(5,550)
Amortization of intangible assets	5,599	6,226
Origination of loans held for sale, net of principal payments received	(1,006)	(766)
Proceeds from the sales of loans held for sale	1,280	833
Net change in accrued expenses and other liabilities	(16,502)	21,752
Net change in accrued interest receivable and other assets	46,745	11,679
Net cash provided by operating activities	123,489	176,409
Cash flows from investing activities:
Net (increase) decrease in interest-bearing time deposits with financial institutions	(1)	247
Proceeds from sales of other real estate owned	209	3,307
Loan (originations) and payments, net	734,144	989,184
Proceeds from sales of loans classified as loans held for investment	55,625	84,472
Purchase of securities held-to-maturity	0	(8,000)
Proceeds from prepayments and maturities of securities held-to-maturity	22,032	21,454
Purchase of securities available-for-sale	(564,079)	(224,347)
Proceeds from prepayments and maturities of securities available-for-sale	425,294	124,796
Proceeds from sales of securities available-for-sale	0	304,320
Proceeds from the sales of premises and equipment	2	3
Proceeds from surrender of bank owned life insurance	352	0
Purchase of premises and equipment	(1,566)	(4,133)
Net change in FHLB, FRB, and other stock	2,017	1,911
Funding of Community Reinvestment Act (“CRA”) investments, net	(3,146)	(26,164)
Net cash provided by investing activities	670,883	1,267,050
Cash flows from financing activities:
Net change in deposit accounts	(367,972)	(812,526)
Net change in short-term borrowings	0	(200,000)
Repayments of long-term borrowings	(394,933)	0
Cash dividends paid	(63,458)	(62,969)
Proceeds from exercise of stock options	187	246
Restricted stock surrendered and canceled	(4,852)	(5,782)
Net cash used in financing activities	(831,028)	(1,081,031)
Net (decrease) increase in cash and cash equivalents	(36,656)	362,428
Cash and cash equivalents, beginning of period	936,473	1,101,249
Cash and cash equivalents, end of period	899,817	1,463,677
Supplemental cash flow disclosures:
Interest paid	141,280	105,459
Income taxes (refunded) paid, net	(3,470)	1,071
Noncash investing activities during the period:
Transfers from loans held for investment to loans held for sale	55,974	84,993
Loans held for sale transfer to loans held for investment	0	1,287
Other real estate owned transferred from loans held for investment	0	7,156
Transfers of investment securities from available-for-sale to held-to-maturity	0	360,347
Transfers of CRA investment securities from FHLB, FRB, and other stock to other assets	0	12,601
Recognition of operating lease right-of-use assets	(4,357)	(1,804)
Recognition of operating lease liabilities	4,131	1,949
Receivable on unsettled security maturity	25,000	0
Due on unsettled security purchases	$ (49,513)	$ 0