Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Loans including fees:
Taxable	$ 148,253	$ 124,610	$ 287,225	$ 242,999
Nontaxable	3,986	3,984	8,209	7,858
Investment securities:
Taxable	29,241	18,367	57,278	37,171
Nontaxable	7,249	6,658	14,657	13,207
Money market and other interest-earning investments	334	117	612	207
Total interest income	189,063	153,736	367,981	301,442
Interest Expense
Deposits	18,519	9,139	34,963	16,394
Federal funds purchased and interbank borrowings	1,817	647	3,735	1,664
Securities sold under agreements to repurchase	671	434	1,333	793
Federal Home Loan Bank advances	10,039	8,824	19,970	16,604
Other borrowings	2,787	2,729	5,702	5,452
Total interest expense	33,833	21,773	65,703	40,907
Net interest income	155,230	131,963	302,278	260,535
Provision for loan losses	1,003	2,446	2,046	2,826
Net interest income after provision for loan losses	154,227	129,517	300,232	257,709
Noninterest Income
Wealth management fees	9,909	9,746	18,444	18,772
Service charges on deposit accounts	11,515	10,765	22,341	21,524
Debit card and ATM fees	5,419	5,080	10,922	9,945
Mortgage banking revenue	7,135	5,189	12,146	9,381
Investment product fees	5,591	5,066	10,862	10,097
Capital markets income	3,150	896	5,667	1,394
Company-owned life insurance	2,711	2,430	5,899	5,035
Net debt securities gains (losses)	1,165	1,494	1,062	2,282
Other income	4,619	8,623	10,287	12,764
Total noninterest income	51,214	49,289	97,630	91,194
Noninterest Expense
Salaries and employee benefits	71,566	66,592	142,749	130,771
Occupancy	14,559	12,873	29,137	26,153
Equipment	4,517	3,728	8,991	7,293
Marketing	4,439	3,962	8,162	7,659
Data processing	10,207	9,724	19,548	18,124
Communication	2,849	2,772	5,903	5,836
Professional fees	4,921	2,923	7,831	5,653
Loan expenses	1,657	1,843	3,569	3,587
FDIC assessment	1,454	3,161	3,541	5,806
Amortization of intangibles	4,325	3,416	8,797	7,025
Amortization of tax credit investments	568	11,858	828	12,574
Other expense	7,056	7,608	12,103	17,136
Total noninterest expense	128,118	130,460	251,159	247,617
Income before income taxes	77,323	48,346	146,703	101,286
Income tax expense	14,359	4,345	27,463	9,302
Net income	$ 62,964	$ 44,001	$ 119,240	$ 91,984
Net income per common share - basic	$ 0.37	$ 0.29	$ 0.69	$ 0.61
Net income per common share - diluted	$ 0.36	$ 0.29	$ 0.68	$ 0.60
Weighted average number of common shares outstanding - basic	172,985	151,878	173,855	151,800
Weighted average number of common shares outstanding - diluted	173,675	152,568	174,531	152,483
Dividends per common share	$ 0.13	$ 0.13	$ 0.26	$ 0.26