Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest Income
Loans	$ 495,829	$ 415,770	$ 426,003
Taxable securities	133,084	107,594	81,578
Tax-exempt securities	14,820	11,746	9,567
Deposits in banks	2,748	955	661
Total interest income	646,481	536,065	517,809
Interest Expense
Deposits	16,533	6,186	9,367
FHLB advances and FRB borrowings	4,659	291	6,264
Subordinated debentures	807	1,932	1,871
Other borrowings	1,646	137	196
Total interest expense	23,645	8,546	17,698
Net Interest Income	622,836	527,519	500,111
Provision for credit losses	1,950	4,800	77,700
Net interest income after provision for credit losses	620,886	522,719	422,411
Noninterest Income
Deposit account and treasury management fees	31,498	27,107	27,019
Card revenue	20,186	18,503	13,928
Financial services and trust revenue	17,659	15,753	12,830
Loan revenue	12,582	22,044	24,802
Bank owned life insurance	7,636	6,533	6,418
Investment securities gains (losses), net	(9)	314	16,710
Other	9,592	3,840	2,793
Total noninterest income	99,144	94,094	104,500
Noninterest Expense
Compensation and employee benefits	241,139	224,034	209,722
Occupancy	41,150	37,815	36,013
Data processing and software	41,117	33,498	29,449
Legal and professional fees	20,578	18,910	12,158
Amortization of intangibles	8,698	7,987	8,724
Business and Occupation taxes	6,797	5,903	4,970
Advertising and promotion	3,962	3,383	4,466
Regulatory premiums	6,619	4,912	2,956
Net cost (benefit) of operation of OREO	114	66	(315)
Other	32,209	23,796	26,376
Total noninterest expense	402,383	360,304	334,519
Income before income taxes	317,647	256,509	192,392
Income tax provision	67,469	53,689	38,148
Net Income	$ 250,178	$ 202,820	$ 154,244
Per Common Share
Basic earnings per common share	$ 3.20	$ 2.79	$ 2.17
Diluted earnings per common share	$ 3.20	$ 2.78	$ 2.17
Weighted average number of common shares outstanding	78,047	72,683	70,835
Weighted average number of diluted common shares outstanding	78,193	72,873	70,880