CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
INTEREST INCOME
Loans	$ 673,720	$ 622,033	$ 577,558
Investment securities and other interest-earning assets	94,858	74,706	53,168
Total interest income	768,578	696,739	630,726
INTEREST EXPENSE
Deposits	40,093	11,817	34,336
FHLB advances and other borrowings	13,131	99	1,532
Subordinated debentures	18,242	22,449	20,647
Total interest expense	71,466	34,365	56,515
Net interest income before provision for credit losses	697,112	662,374	574,211
Provision for credit losses	4,832	(70,876)	191,816
Net interest income after provision for credit losses	692,280	733,250	382,395
NONINTEREST INCOME
Loan servicing income	1,664	2,121	2,028
Earnings on bank-owned life insurance	13,159	11,299	7,160
Net gain from sales of loans	3,238	4,428	8,609
Net gain from sales of investment securities	1,710	16,906	13,882
Other income	5,369	13,360	9,538
Total noninterest income	88,748	107,850	71,325
NONINTEREST EXPENSE
Compensation and benefits	225,245	215,690	180,452
Premises and occupancy	47,433	48,234	43,296
Data processing	26,649	23,770	20,491
FDIC insurance premiums	5,772	5,274	3,571
Legal and professional services	17,947	18,554	15,633
Marketing expense	7,632	6,917	5,891
Office expense	5,103	5,957	7,216
Loan expense	3,810	4,469	3,531
Deposit expense	19,448	15,654	19,700
Merger-related expense	0	5	49,129
Amortization of intangible assets	13,983	15,936	17,072
Other expense	23,648	19,817	15,137
Total noninterest expense	396,670	380,277	381,119
Net income before income taxes	384,358	460,823	72,601
Income tax expense	100,615	120,934	12,250
Net income	$ 283,743	$ 339,889	$ 60,351
EARNINGS PER SHARE
Basic (in dollars per share)	$ 2.99	$ 3.60	$ 0.75
Diluted (in dollars per share)	$ 2.98	$ 3.58	$ 0.75
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	93,718,293	93,532,109	79,209,560
Diluted (in shares)	94,091,461	94,012,137	79,506,274
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income	$ 10,698	$ 9,219	$ 6,712
Other service fee income
NONINTEREST INCOME
Noninterest income	1,351	1,566	1,554
Debit card interchange fee income
NONINTEREST INCOME
Noninterest income	3,628	3,489	2,526
Trust custodial account fees
NONINTEREST INCOME
Noninterest income	41,606	38,176	16,653
Escrow and exchange fees
NONINTEREST INCOME
Noninterest income	$ 6,325	$ 7,286	$ 2,663