Consolidated Statements of Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Income
Interest and fees on LHFS & LHFI		$ 363,772	$ 390,803	$ 440,156
Interest and fees on PPP loans		36,726	26,643
Interest and fees on acquired loans	[1]			8,373
Interest on securities:
Taxable		38,698	48,250	54,649
Tax exempt		548	1,079	1,711
Interest on federal funds sold and securities purchased under reverse repurchase agreements			1	240
Other interest income		2,767	1,559	5,363
Total Interest Income		442,511	468,335	510,492
Interest Expense
Interest on deposits		16,945	37,487	79,171
Interest on federal funds purchased and securities sold under repurchase agreements		232	755	1,420
Other interest expense		6,983	3,556	3,312
Total Interest Expense		24,160	41,798	83,903
Net Interest Income		418,351	426,537	426,589
PCL, LHFI	[1]	(21,499)	36,113	10,797
PCL, off-balance sheet credit exposures	[2]	(2,949)	8,934
Provision for loan losses, acquired loans	[1]			42
Net Interest Income After PCL		442,799	381,490	415,750
Noninterest Income
Service charges on deposit accounts		33,246	32,289	42,603
Bank card and other fees		34,662	31,022	31,736
Mortgage banking, net		63,750	125,822	29,822
Insurance commissions		48,511	45,176	42,396
Wealth management		35,190	31,625	30,679
Other, net		6,551	8,659	9,809
Total Noninterest Income		221,910	274,593	187,045
Noninterest Expense
Salaries and employee benefits	[2]	284,158	272,257	247,717
Services and fees	[2]	89,463	83,816	73,315
Net occupancy - premises	[2]	27,043	26,489	26,149
Equipment expense	[2]	24,337	23,277	23,733
Other real estate expense, net	[2]	3,528	1,956	3,906
Other expense	[2]	60,767	58,506	54,182
Total Noninterest Expense	[2],[3]	489,296	466,301	429,002
Income Before Income Taxes		175,413	189,782	173,793
Income taxes		28,048	29,757	23,333
Net Income		$ 147,365	$ 160,025	$ 150,460
Earnings Per Share
Basic		$ 2.35	$ 2.52	$ 2.33
Diluted		$ 2.34	$ 2.51	$ 2.32

[1] Effective January 1, 2020, Trustmark adopted FASB ASU 2016-13 using the modified retrospective approach. Therefore, prior period balances are presented under legacy GAAP and may not be comparable to current period presentation.

[2] During 2021, Trustmark reclassified its credit loss expense on off-balance sheet credit exposures from noninterest expense to PCL, off-balance sheet credit exposures. Prior periods have been reclassified accordingly.

[3] During 2021, Trustmark reclassified its credit loss expense related to off-balance sheet credit exposures from noninterest expense to PCL, off-balance sheet credit exposures. Prior periods have been reclassified accordingly.