Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest income
Loans	$ 124,476	$ 108,577	$ 377,788	$ 301,351
Securities
Taxable	7,218	6,632	22,874	16,326
Tax-exempt	1,292	1,592	3,992	4,926
Other	1,490	994	4,778	2,146
Total interest income	134,476	117,795	409,432	324,749
Interest expense
Deposits	21,514	13,556	62,277	32,534
Borrowings	4,137	4,800	12,383	11,147
Total interest expense	25,651	18,356	74,660	43,681
Net interest income	108,825	99,439	334,772	281,068
Provision for loan losses	1,700	2,250	4,100	5,810
Net interest income after provision for loan losses	107,125	97,189	330,672	275,258
Noninterest income
Service charges on deposit accounts	8,992	8,847	26,699	25,591
Fees and commissions	3,090	5,944	16,608	17,546
Insurance commissions	2,508	2,461	6,814	6,576
Wealth management revenue	3,588	3,386	10,513	10,094
Mortgage banking income	15,710	14,350	42,731	38,149
Net gain (loss) on sales of securities	343	(16)	348	(16)
BOLI income	1,734	1,186	4,481	3,326
Other	1,988	1,895	7,604	6,321
Total noninterest income	37,953	38,053	115,798	107,587
Noninterest expense
Salaries and employee benefits	65,425	55,187	183,100	155,981
Data processing	4,980	4,614	14,584	13,458
Net occupancy and equipment	12,943	10,668	36,322	30,295
Other real estate owned	418	278	1,674	1,167
Professional fees	2,976	2,056	7,861	6,370
Advertising and public relations	3,318	2,242	8,833	7,092
Intangible amortization	1,996	1,765	6,159	5,010
Communications	2,310	2,190	6,553	6,036
Extinguishment of debt	(54)	0	(54)	0
Merger and conversion related expenses	24	11,221	203	12,621
Other	2,056	4,525	13,279	13,686
Total noninterest expense	96,500	94,746	278,622	251,716
Income before income taxes	48,578	40,496	167,848	131,129
Income taxes	11,132	8,532	38,667	28,629
Net income (loss)	$ 37,446	$ 31,964	$ 129,181	$ 102,500
Basic earnings per share (usd per share)	$ 0.65	$ 0.61	$ 2.21	$ 2.03
Diluted earnings per share (usd per share)	0.64	0.61	2.21	2.03
Cash dividends per common share (usd per share)	$ 0.22	$ 0.20	$ 0.65	$ 0.59