CONSOLIDATED STATEMENTS OF INCOME/(LOSS) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
INTEREST INCOME
Loans	$ 167,455	$ 133,339	$ 122,974	$ 414,059	$ 366,310
Investment securities and other interest-earning assets	14,536	10,783	9,630	35,843	29,951
Total interest income	181,991	144,122	132,604	449,902	396,261
INTEREST EXPENSE
Deposits	8,509	9,655	15,878	28,651	45,153
FHLB advances and other borrowings	113	217	1,214	1,411	9,099
Subordinated debentures	6,823	3,958	3,177	13,827	7,627
Total interest expense	15,445	13,830	20,269	43,889	61,879
Net interest income before provision for credit losses	166,546	130,292	112,335	406,013	334,382
Provision for credit losses	4,210	160,635	1,562	190,299	3,422
Net interest income (loss) after provision for credit losses	162,336	(30,343)	110,773	215,714	330,960
NONINTEREST INCOME
Loan servicing fees	481	434	546	1,395	1,353
Earnings on bank-owned life insurance	2,270	1,314	861	4,920	2,622
Net gain (loss) from sales of loans	9,542	(2,032)	2,313	8,281	4,944
Net gain (loss) from sales of investment securities	1,141	(21)	4,261	8,880	4,900
Other income	3,340	2,653	1,228	7,747	3,689
Total noninterest income	26,758	6,898	11,430	48,131	25,435
NONINTEREST EXPENSE
Compensation and benefits	51,021	43,011	35,543	128,408	102,778
Premises and occupancy	12,373	9,487	7,593	30,028	22,645
Data processing	6,783	4,465	3,094	14,501	9,060
Other real estate owned operations, net	(17)	9	64	6	129
FDIC insurance premiums	1,145	846	(10)	2,358	1,530
Legal, audit and professional expense	5,108	3,094	3,058	11,328	9,601
Marketing expense	1,718	1,319	1,767	4,449	4,689
Office, telecommunications and postage expense	2,389	1,533	1,200	5,025	3,721
Loan expense	802	823	1,137	2,447	3,015
Deposit expense	4,728	4,958	3,478	14,674	10,729
Merger-related expense	2,988	39,346	(4)	44,058	656
Amortization of intangible assets	4,538	4,066	4,281	12,567	12,998
Other expense	5,003	3,013	4,135	11,331	11,298
Total noninterest expense	98,579	115,970	65,336	281,180	192,849
Net income (loss) before income taxes	90,515	(139,415)	56,867	(17,335)	163,546
Income tax expense (benefit)	23,949	(40,324)	15,492	(10,550)	44,926
Net income (loss)	$ 66,566	$ (99,091)	$ 41,375	$ (6,785)	$ 118,620
EARNINGS (LOSS) PER SHARE
Basic (in dollars per share)	$ 0.71	$ (1.41)	$ 0.69	$ (0.10)	$ 1.93
Diluted (in dollars per share)	$ 0.70	$ (1.41)	$ 0.69	$ (0.10)	$ 1.92
WEIGHTED AVERAGE SHARES OUTSTANDING
Basic (in shares)	93,529,967	70,425,027	59,293,218	74,391,688	60,853,081
Diluted (in shares)	93,719,167	70,425,027	59,670,855	74,391,688	61,201,858
Service charges on deposit accounts
NONINTEREST INCOME
Noninterest income	$ 1,593	$ 1,399	$ 1,440	$ 4,707	$ 4,211
Other service fee income
NONINTEREST INCOME
Noninterest income	487	297	360	1,095	1,079
Debit card interchange fee income
NONINTEREST INCOME
Noninterest income	944	457	421	1,749	2,637
Custodial account fees
NONINTEREST INCOME
Noninterest income	$ 6,960	$ 2,397	$ 0	$ 9,357	$ 0