Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018	Sep. 30, 2017
Interest Income
Interest and fees on LHFS & LHFI	$ 102,980	$ 89,112		$ 291,362	$ 253,507
Interest and fees on acquired loans	4,033	6,625		13,932	18,077
Interest on securities:
Taxable	16,186	19,291		50,586	57,865
Tax exempt	518	717		1,748	2,328
Interest on federal funds sold and securities purchased under reverse repurchase agreements	3	14		10	26
Other interest income	1,050	355		3,038	993
Total Interest Income	124,770	116,114		360,676	332,796
Interest Expense
Interest on deposits	14,972	6,381		36,602	15,433
Interest on federal funds purchased and securities sold under repurchase agreements	1,348	1,301		3,260	3,036
Other interest expense	1,467	4,520		6,574	10,821
Total Interest Expense	17,787	12,202		46,436	29,290
Net Interest Income	106,983	103,912		314,240	303,506
Provision for loan losses, LHFI	8,673	3,672		15,801	9,355
Provision for loan losses, acquired loans	(467)	(1,653)		(758)	(5,822)
Net Interest Income After Provision for Loan Losses	98,777	101,893		299,197	299,973
Noninterest Income
Service charges on deposit accounts	11,075	11,223	[1]	32,579	32,810	[1]
Bank card and other fees	7,459	7,150	[1]	21,155	21,020	[1]
Mortgage banking, net	8,647	4,425	[1]	28,958	23,618	[1]
Insurance commissions	10,765	10,398	[1]	30,919	29,355	[1]
Wealth management	7,789	7,530	[1]	22,834	22,617	[1]
Other, net	1,358	3,740	[1]	4,832	11,268	[1]
Security gains (losses), net		14	[1]	0	15	[1]
Total Noninterest Income	47,093	44,480	[1]	141,277	140,703	[1]
Noninterest Expense
Salaries and employee benefits	60,847	57,871		179,297	170,445
Defined benefit plan termination					17,644
Services and fees	16,404	15,133		48,472	45,474
Net occupancy - premises	6,910	6,702		19,962	19,150
Equipment expense	6,200	6,297		18,501	18,457
Other real estate expense, net	1,168	864		1,941	3,006
FDIC assessment expense	1,999	2,816		7,532	8,142
Other expense	11,695	13,403		35,783	44,900
Total Noninterest Expense	105,223	103,086		311,488	327,218
Income Before Income Taxes	40,647	43,287		128,986	113,458
Income taxes	4,394	8,708		16,090	23,596
Net Income	$ 36,253	$ 34,579		$ 112,896	$ 89,862
Earnings Per Share
Basic	$ 0.54	$ 0.51		$ 1.67	$ 1.33
Diluted	0.54	0.51		1.67	1.32
Dividends Per Share	$ 0.23	$ 0.23		$ 0.69	$ 0.69

[1] Trustmark elected the modified retrospective approach of adoption; therefore, prior period balances are presented under legacy GAAP and may not be comparable to current year presentation.