Unaudited Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest and dividend income:
Interest and fees on loans	$ 124,992	$ 86,735	$ 333,595	$ 266,310
Taxable interest and dividends on securities	29,280	14,314	88,277	36,977
Non-taxable interest and dividends on securities	1,917	1,848	5,585	5,561
Interest on federal funds sold and other short-term investments	1,638	571	2,726	1,434
Total interest and dividend income	157,827	103,468	430,183	310,282
Interest expense:
Interest on deposits	4,781	736	11,164	2,769
Interest on borrowings	867	41	959	123
Total interest expense	5,648	777	12,123	2,892
Net interest income	152,179	102,691	418,060	307,390
Provision for (release of) allowance for loan losses	6,480	(1,488)	7,045	(5,368)
Net interest income after provision for loan losses	145,699	104,179	411,015	312,758
Noninterest income:
Insurance commissions	23,788	21,956	77,183	73,767
Service charges on deposit accounts	6,708	5,935	23,558	17,010
Trust and investment advisory fees	5,832	6,310	17,967	18,047
Debit card processing fees	3,249	3,030	9,417	8,949
Interest rate swap income	1,562	881	6,087	5,122
(Losses) income from investments held in rabbi trusts	(2,248)	(289)	(13,997)	5,773
Gains on sales of mortgage loans held for sale, net	22	717	240	3,044
(Losses) gains on sales of securities available for sale, net	(198)	1	(2,474)	1,166
Other	4,638	4,668	13,664	11,276
Total noninterest income	43,353	43,209	131,645	144,154
Noninterest expense:
Salaries and employee benefits	78,060	66,238	220,582	199,554
Office occupancy and equipment	9,703	7,960	31,205	24,271
Data processing	13,294	12,191	42,959	37,892
Professional services	5,826	4,024	14,561	14,611
Marketing expenses	2,219	1,598	6,444	6,786
Loan expenses	1,152	1,586	3,444	5,287
FDIC insurance	1,578	1,056	4,710	2,989
Amortization of intangible assets	1,033	629	2,767	1,786
Other	3,975	3,688	10,173	7,178
Total noninterest expense	116,840	98,970	336,845	300,354
Income before income tax expense	72,212	48,418	205,815	156,558
Income tax expense	17,435	11,312	48,350	36,980
Net income	$ 54,777	$ 37,106	$ 157,465	$ 119,578
Basic earnings per share (in dollars per share)	$ 0.33	$ 0.22	$ 0.94	$ 0.69
Diluted earnings per share (in dollars per share)	$ 0.33	$ 0.22	$ 0.94	$ 0.69