Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
INTEREST INCOME
Loans, including fees	$ 127,176	$ 146,424
Interest bearing balances due from banks and federal funds sold	649	798
Investment securities	33,712	21,573
Mortgage loans held for sale	190	639
TOTAL INTEREST INCOME	161,727	169,434
INTEREST EXPENSE
Deposits	6,817	13,179
Federal funds purchased and securities sold under agreements to repurchase	68	245
Other borrowings	4,779	4,802
Subordinated notes and debentures	4,457	4,527
TOTAL INTEREST EXPENSE	16,121	22,753
NET INTEREST INCOME	145,606	146,681
Provision for credit losses	(19,914)	1,445
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	165,520	145,236
NON-INTEREST INCOME
Bank owned life insurance income	2,706	1,523
Gain (loss) on sale of securities, net	(54)	5,471
Other income	7,266	10,500
TOTAL NON-INTEREST INCOME	42,218	49,549
NON-INTEREST EXPENSE
Salaries and employee benefits	67,906	60,340
Occupancy expense, net	10,023	9,300
Furniture and equipment expense	4,775	5,415
Other real estate and foreclosure expense	343	343
Deposit insurance	1,838	1,308
Merger related costs	1,886	233
Other operating expenses	41,646	36,063
TOTAL NON-INTEREST EXPENSE	128,417	113,002
INCOME BEFORE INCOME TAXES	79,321	81,783
Provision for income taxes	14,226	14,363
NET INCOME	65,095	67,420
Preferred stock dividends	0	13
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 65,095	$ 67,407
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.58	$ 0.62
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.58	$ 0.62
Wealth management fees
NON-INTEREST INCOME
Non-interest income	$ 7,968	$ 7,361
Service charges on deposit accounts
NON-INTEREST INCOME
Non-interest income	10,696	9,715
Other service charges and fees
NON-INTEREST INCOME
Non-interest income	1,637	1,922
Mortgage lending income
NON-INTEREST INCOME
Non-interest income	4,550	6,447
Debit and credit card fees
NON-INTEREST INCOME
Non-interest income	$ 7,449	$ 6,610