CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 49,416	$ 51,873	$ 102,192	$ 94,962
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization			10,519	12,964
Provision for credit losses			8,453	6,491
Net amortization of premium on securities			14,848	38,332
Securities losses (gains), net	314	2,089	1,418	(783)
Unrealized (gain) loss on equity securities, net			(152)	404
Stock based compensation			6,893	5,090
Loans originated for sale			(86,860)	(180,072)
Proceeds on sales of loans held for sale			80,641	188,317
Net gains on sale of loans held for sale			(2,857)	(5,408)
Increase in accrued interest receivable			(2,135)	(280)
Decrease (increase) in prepaid expenses			2,647	(2,194)
Increase (decrease) in accrued interest payable			30,446	(91)
Capitalization of servicing rights			(24)	(904)
Valuation adjustment on servicing rights	0	0	0	(1,658)
Gain on sales/valuations of assets, net			(2,257)	(139)
Net excess tax benefit (expense) from stock based compensation			(75)	129
Other, net			21,028	33,327
NET CASH PROVIDED BY OPERATING ACTIVITIES			184,725	188,487
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the sale of securities available for sale	140,290	149,840	286,738	973,911
Proceeds from the sale of securities held to maturity			0	2,337
Proceeds from the maturity of and principal paydowns on securities available for sale			336,175	565,196
Proceeds from the maturity of and principal paydowns on securities held to maturity			298	1,286
Proceeds from the maturity of time deposits in other financial institutions			250	1,039
Proceeds from the sale, maturity of, redemption of and principal paydowns on other investments			6,761	6,715
Purchase of securities available for sale			(265,959)	(1,788,922)
Purchase of other investments			(4,474)	(8,714)
Net increase in loans			(307,920)	(752,767)
Purchase of bank owned life insurance policies			(206)	(201)
Proceeds from bank owned life insurance policies			0	502
Proceeds from sale of mortgage servicing rights			6,714	0
Capital expenditures			(3,043)	(8,181)
Proceeds from the sale of equipment			1,321	4,264
Net cash expended in divestitures			0	(50,616)
Proceeds on sale of OREO and other repossessed assets			5,077	1,927
NET CASH PROVIDED (USED) BY INVESTING ACTIVITIES			61,732	(1,052,224)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net decrease in demand deposits			(803,482)	(392,811)
Net (decrease) increase in savings deposits			(1,221,795)	1,203,729
Net increase in time deposit accounts			2,175,811	61,228
Net decrease in short-term borrowings			(281,753)	(33,848)
Proceeds from short term advances			51,000	141,000
Repayments of short term advances			(101,000)	(141,000)
Repayments of other borrowings			(60)	(168)
Proceeds from issuance of common stock			1,456	1,682
Dividends paid			(29,534)	(26,880)
NET CASH (USED) PROVIDED BY FINANCING ACTIVITIES			(209,357)	812,932
Net increase (decrease) in cash and cash equivalents			37,100	(50,805)
Cash and cash equivalents at beginning of year			363,087	435,599	$ 435,599
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 400,187	$ 384,794	400,187	384,794	$ 363,087
Supplemental disclosures:
Cash paid for income/franchise taxes			40,303	17,457
Cash paid for interest			122,688	17,100
Loans transferred to OREO			239	4,684
Transfer of premises from premises, furniture and equipment, net, to premises, furniture and equipment held for sale			3,741	4,061
Transfer of premises from premises, furniture and equipment held for sale to premises, furniture and equipment, net			5,825	0
Dividends declared, not paid			2,074	2,013
Purchases of securities available for sale, accrued, not settled			$ 0	$ 7,420