Consolidated Statements of Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
INTEREST INCOME
Loans, including fees	$ 1,063,206	$ 1,083,093	$ 989,196
Interest bearing balances due from banks and federal funds sold	14,140	11,808	13,490
Investment securities	165,452	216,433	206,918
Mortgage loans held for sale	799	731	557
Assets held in trading accounts	217	0	0
TOTAL INTEREST INCOME	1,243,814	1,312,065	1,210,161
INTEREST EXPENSE
Deposits	475,908	600,240	472,919
Federal funds purchased and securities sold under agreements to repurchase	301	602	1,150
Other borrowings	23,422	55,127	60,517
Subordinated notes and debentures	24,980	27,631	25,449
TOTAL INTEREST EXPENSE	524,611	683,600	560,035
NET INTEREST INCOME	719,203	628,465	650,126
Provision for credit losses	65,824	46,785	42,028
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	653,379	581,680	608,098
NONINTEREST INCOME (LOSS)
Bank owned life insurance income	15,867	15,227	11,717
Loss on sale of securities, net	(801,492)	(28,393)	(20,609)
Other income	31,350	27,493	35,398
TOTAL NONINTEREST INCOME (LOSS)	(615,970)	147,171	155,566
NONINTEREST EXPENSE
Salaries and employee benefits	297,859	284,124	286,117
Occupancy expense, net	48,237	48,214	46,741
Furniture and equipment expense	21,518	22,047	20,741
Other real estate and foreclosure expense	1,046	700	892
Deposit insurance	20,219	23,938	29,986
Merger related costs	0	0	1,420
Other operating expenses	176,184	178,520	177,164
TOTAL NONINTEREST EXPENSE	565,063	557,543	563,061
INCOME (LOSS) BEFORE INCOME TAXES	(527,654)	171,308	200,603
Provision for (benefit from) income taxes	(130,101)	18,615	25,546
NET INCOME (LOSS)	$ (397,553)	$ 152,693	$ 175,057
BASIC EARNINGS PER SHARE (in dollars per share)	$ (2.96)	$ 1.22	$ 1.39
DILUTED EARNINGS PER SHARE (in dollars per share)	$ (2.95)	$ 1.21	$ 1.38
Service charges on deposit accounts
NONINTEREST INCOME (LOSS)
Non-interest income	$ 50,937	$ 49,898	$ 50,530
Debit and credit card fees
NONINTEREST INCOME (LOSS)
Non-interest income	34,151	32,875	31,472
Wealth management fees
NONINTEREST INCOME (LOSS)
Non-interest income	39,395	36,341	32,730
Mortgage lending income
NONINTEREST INCOME (LOSS)
Non-interest income	8,191	8,077	7,733
Other service charges and fees
NONINTEREST INCOME (LOSS)
Non-interest income	$ 5,631	$ 5,653	$ 6,595