CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
INTEREST INCOME:
Interest and fees on loans	$ 153,843	$ 102,369
Interest on securities:
Taxable	55,976	32,620
Nontaxable	6,028	6,202
Interest on interest bearing deposits in other financial institutions	1,131	71
TOTAL INTEREST INCOME	216,978	141,262
INTEREST EXPENSE:
Interest on deposits	56,898	2,977
Interest on short-term borrowings	2,422	46
Interest on other borrowings (includes $591 and $0 of interest expense related to derivatives reclassified from accumulated other comprehensive income (loss) for the three months ended March 31, 2023 and 2022, respectively)	5,446	3,560
TOTAL INTEREST EXPENSE	64,766	6,583
NET INTEREST INCOME	152,212	134,679
Provision for credit losses	3,074	3,245
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	149,138	131,434
NONINTEREST INCOME:
Loan servicing income	714	286
Securities (losses) gains, net (includes $(1,104) and $1,991 of net security (losses) gains reclassified from accumulated other comprehensive income (loss) for the three months ended March 31, 2023 and 2022, respectively)	(1,104)	2,872
Unrealized gain (loss) on equity securities, net	193	(283)
Net gains on sale of loans held for sale	1,831	3,411
Valuation adjustment on servicing rights	0	1,658
Income on bank owned life insurance	964	524
Other noninterest income	1,463	863
TOTAL NONINTEREST INCOME	29,999	34,569
NONINTEREST EXPENSES:
Salaries and employee benefits	62,149	66,174
Occupancy	7,209	7,362
Furniture and equipment	2,915	3,519
Professional fees	16,076	15,156
Advertising	1,985	1,555
Core deposit and customer relationship intangibles amortization	1,788	2,054
Other real estate and loan collection expenses	155	195
Loss on sales/valuations of assets, net	1,115	46
Acquisition, integration and restructuring costs	1,673	576
Partnership investment in tax credit projects	538	77
Other noninterest expenses	15,440	14,083
TOTAL NONINTEREST EXPENSES	111,043	110,797
INCOME BEFORE INCOME TAXES	68,094	55,206
Income taxes (includes $426 and $503 of income tax benefit reclassified from accumulated other comprehensive income (loss) for the three months ended March 31, 2023 and 2022, respectively)	15,318	12,117
NET INCOME	52,776	43,089
Preferred dividends	(2,013)	(2,013)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 50,763	$ 41,076
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 1.19	$ 0.97
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	1.19	0.97
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.30	$ 0.27
Service charges and fees
NONINTEREST INCOME:
Revenue from contract with customers	$ 17,136	$ 15,251
Trust fees
NONINTEREST INCOME:
Revenue from contract with customers	5,657	6,079
Brokerage and insurance commissions
NONINTEREST INCOME:
Revenue from contract with customers	696	869
Capital markets fees
NONINTEREST INCOME:
Revenue from contract with customers	$ 2,449	$ 3,039