Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
INTEREST INCOME
Loans	$ 179,971	$ 162,438	$ 517,533	$ 456,041
Interest bearing balances due from banks and federal funds sold	1,586	1,405	4,861	3,828
Investment securities	15,367	14,640	49,273	41,558
Mortgage loans held for sale	382	501	924	964
TOTAL INTEREST INCOME	197,306	178,984	572,591	502,391
INTEREST EXPENSE
Deposits	36,936	24,390	102,482	58,448
Federal funds purchased and securities sold under agreements to repurchase	249	104	642	302
Other borrowings	5,381	6,240	18,393	16,520
Subordinated notes and debentures	4,576	5,282	13,528	12,350
TOTAL INTEREST EXPENSE	47,142	36,016	135,045	87,620
NET INTEREST INCOME	150,164	142,968	437,546	414,771
Provision for loan losses	21,973	10,345	38,337	28,528
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	128,191	132,623	399,209	386,243
NON-INTEREST INCOME
Investment banking income	513	664	1,491	2,312
Bank owned life insurance income	1,302	1,105	3,357	3,310
Gain on sale of securities, net	7,374	54	12,937	53
Other income	43,821	4,942	52,083	14,151
TOTAL NON-INTEREST INCOME	83,775	33,725	156,542	109,308
NON-INTEREST EXPENSE
Salaries and employee benefits	52,065	55,515	164,560	167,550
Occupancy expense, net	8,342	7,713	22,736	22,594
Furniture and equipment expense	4,898	3,761	12,462	12,184
Other real estate and foreclosure expense	1,125	538	2,353	2,940
Deposit insurance	0	2,248	4,550	6,232
Merger related costs	2,556	804	11,548	3,980
Other operating expenses	37,879	29,674	100,808	81,353
TOTAL NON-INTEREST EXPENSE	106,865	100,253	319,017	296,833
INCOME BEFORE INCOME TAXES	105,101	66,095	236,734	198,718
Provision for income taxes	23,275	10,902	51,289	38,651
NET INCOME	81,826	55,193	185,445	160,067
Preferred stock dividends	0	0	326	0
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 81,826	$ 55,193	$ 185,119	$ 160,067
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.85	$ 0.60	$ 1.95	$ 1.74
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.84	$ 0.59	$ 1.94	$ 1.72
Trust income
NON-INTEREST INCOME
Non-interest income	$ 6,108	$ 6,277	$ 17,610	$ 17,148
Service charges on deposit accounts
NON-INTEREST INCOME
Non-interest income	10,825	10,837	31,450	31,245
Other service charges and fees
NON-INTEREST INCOME
Non-interest income	1,308	1,201	3,909	5,968
Mortgage lending income
NON-INTEREST INCOME
Non-interest income	4,509	1,521	10,988	7,773
SBA lending income
NON-INTEREST INCOME
Non-interest income	956	304	2,348	1,627
Debit and credit card fees
NON-INTEREST INCOME
Non-interest income	$ 7,059	$ 6,820	$ 20,369	$ 25,721