CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest income:
Interest and fees on loans	$ 107,275	$ 77,959	$ 207,637	$ 150,473
Interest and dividends on taxable investments	20,811	24,899	42,749	47,491
Interest and dividends on nontaxable investments	3,538	3,317	7,120	5,907
Total interest income	131,624	106,175	257,506	203,871
Interest expense:
Interest on deposits	18,948	2,691	28,876	5,256
Interest on borrowings	3,397	304	8,283	525
Interest on subordinated notes payable	0	39	38	77
Total interest expense	22,345	3,034	37,197	5,858
Net interest income	109,279	103,141	220,309	198,013
Provision for credit losses	752	6,038	4,252	6,944
Net interest income after provision for credit losses	108,527	97,103	216,057	191,069
Noninterest revenues:
Deposit service fees	15,698	16,138	30,832	32,293
Mortgage banking	11	269	286	424
Other banking services	2,042	870	3,064	1,609
Employee benefit services	28,565	28,921	57,949	58,501
Insurance services	11,860	9,780	23,382	20,189
Wealth management services	7,858	8,141	16,103	16,774
Loss on sales of investment securities	0	0	52,329	0
Gain on debt extinguishment	0	0	242	0
Unrealized loss on equity securities	(50)	(22)	(50)	(20)
Total noninterest revenues	65,984	64,097	79,479	129,770
Noninterest expenses:
Salaries and employee benefits	68,034	65,398	139,521	127,046
Data processing and communications	14,291	13,611	27,420	26,270
Occupancy and equipment	10,453	10,424	21,477	21,376
Amortization of intangible assets	3,705	3,851	7,372	7,583
Legal and professional fees	3,102	3,385	8,303	7,002
Business development and marketing	4,567	3,616	7,468	6,359
Acquisition expenses	(1)	3,960	56	4,259
Acquisition-related contingent consideration adjustment	1,000	400	1,000	400
Other expenses	7,887	5,779	14,473	9,936
Total noninterest expenses	113,038	110,424	227,090	210,231
Income before income taxes	61,473	50,776	68,446	110,608
Income taxes	13,182	10,971	14,357	23,748
Net income	$ 48,291	$ 39,805	$ 54,089	$ 86,860
Basic earnings per share	$ 0.90	$ 0.74	$ 1.00	$ 1.61
Diluted earnings per share	$ 0.89	$ 0.73	$ 1.00	$ 1.60