Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Interest Income
Interest and fees on LHFS & LHFI	$ 96,712	$ 84,988		$ 188,382	$ 164,395
Interest and fees on acquired loans	5,022	6,263		9,899	11,452
Interest on securities:
Taxable	16,894	19,377		34,400	38,574
Tax exempt	579	766		1,230	1,611
Interest on federal funds sold and securities purchased under reverse repurchase agreements	5	11		7	12
Other interest income	1,054	371		1,988	638
Total Interest Income	120,266	111,776		235,906	216,682
Interest Expense
Interest on deposits	12,139	5,107		21,630	9,052
Interest on federal funds purchased and securities sold under repurchase agreements	1,250	1,037		1,912	1,735
Other interest expense	1,713	3,628		5,107	6,301
Total Interest Expense	15,102	9,772		28,649	17,088
Net Interest Income	105,164	102,004		207,257	199,594
Provision for loan losses, LHFI	3,167	2,921		7,128	5,683
Provision for loan losses, acquired loans	(441)	(2,564)		(291)	(4,169)
Net Interest Income After Provision for Loan Losses	102,438	101,647		200,420	198,080
Noninterest Income
Service charges on deposit accounts	10,647	10,755	[1]	21,504	21,587	[1]
Bank card and other fees	7,070	7,370	[1]	13,696	13,870	[1]
Mortgage banking, net	9,046	9,008	[1]	20,311	19,193	[1]
Insurance commissions	10,735	9,745	[1]	20,154	18,957	[1]
Wealth management	7,478	7,674	[1]	15,045	15,087	[1]
Other, net	2,415	5,637	[1]	3,474	7,528	[1]
Security gains (losses), net		1	[1]	0	1	[1]
Total Noninterest Income	47,391	50,190	[1]	94,184	96,223	[1]
Noninterest Expense
Salaries and employee benefits	59,975	57,185		118,450	112,574
Defined benefit plan termination		17,644			17,644
Services and fees	16,322	15,009		32,068	30,341
Net occupancy - premises	6,550	6,210		13,052	12,448
Equipment expense	6,202	6,162		12,301	12,160
Other real estate expense, net	(93)	383		773	2,142
FDIC assessment expense	2,538	2,686		5,533	5,326
Other expense	12,306	16,796		24,088	31,497
Total Noninterest Expense	103,800	122,075		206,265	224,132
Income Before Income Taxes	46,029	29,762		88,339	70,171
Income taxes	6,216	5,727		11,696	14,888
Net Income	$ 39,813	$ 24,035		$ 76,643	$ 55,283
Earnings Per Share
Basic	$ 0.59	$ 0.35		$ 1.13	$ 0.82
Diluted	0.59	0.35		1.13	0.81
Dividends Per Share	$ 0.23	$ 0.23		$ 0.46	$ 0.46

[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.