Revenue from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Summary of Noninterest Income (Loss) Disaggregated by Reportable Operating Segment and Revenue Stream

The following table presents noninterest income (loss) disaggregated by reportable operating segment and revenue stream for the periods presented ($ in thousands):

	Year Ended December 31, 2025							Year Ended December 31, 2024								Year Ended December 31, 2023
	Topic 606		Not Topic 606 (1)			Total		Topic 606		Not Topic 606 (1)			Total			Topic 606		Not Topic 606 (1)			Total
General Banking    Segment
Service charges on    deposit accounts	$	43,477	$	—		$	43,477	$	44,295	$	—		$	44,295		$	43,329	$	—		$	43,329
Bank card and other fees		30,690		2,497			33,187		31,010		2,138			33,148			30,387		2,995			33,382
Mortgage banking, net		—		33,082			33,082		—		26,626			26,626			—		26,216			26,216
Wealth management		713		—			713		748		—			748			838		—			838
Other, net		13,120		(382	)		12,738		16,906		337			17,243			11,769		(2,076	)		9,693
Securities gains (losses),    net		—		—			—		—		(182,792	)		(182,792	)		—		39			39
Total noninterest    income (loss)	$	88,000	$	35,197		$	123,197	$	92,959	$	(153,691	)	$	(60,732	)	$	86,323	$	27,174		$	113,497
Wealth Management    Segment
Service charges on    deposit accounts	$	179	$	—		$	179	$	87	$	—		$	87		$	87	$	—		$	87
Bank card and other fees		195		—			195		153		—			153			57		—			57
Wealth management		39,399		—			39,399		36,503		—			36,503			34,254		—			34,254
Other, net		286		384			670		193		377			570			162		376			538
Total noninterest    income	$	40,059	$	384		$	40,443	$	36,936	$	377		$	37,313		$	34,560	$	376		$	34,936
Consolidated
Service charges on    deposit accounts	$	43,656	$	—		$	43,656	$	44,382	$	—		$	44,382		$	43,416	$	—		$	43,416
Bank card and other fees		30,885		2,497			33,382		31,163		2,138			33,301			30,444		2,995			33,439
Mortgage banking, net		—		33,082			33,082		—		26,626			26,626			—		26,216			26,216
Wealth management		40,112		—			40,112		37,251		—			37,251			35,092		—			35,092
Other, net		13,406		2			13,408		17,099		714			17,813			11,931		(1,700	)		10,231
Securities gains (losses),    net		—		—			—		—		(182,792	)		(182,792	)		—		39			39
Total noninterest    income (loss)	$	128,059	$	35,581		$	163,640	$	129,895	$	(153,314	)	$	(23,419	)	$	120,883	$	27,550		$	148,433

(1)Noninterest income (loss) not in scope for FASB ASC Topic 606 includes customer derivatives revenue and miscellaneous credit card fee income within bank card and other fees; mortgage banking, net; amortization of tax credits, cash surrender value on various life insurance policies, earnings on Trustmark’s non-qualified deferred compensation plans, other partnership investments and rental income within other, net; and securities gains (losses), net.