Defined Benefit and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Trustmark Capital Accumulation Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Net periodic benefit Cost

The following table presents information regarding net periodic benefit cost for Trustmark’s qualified pension plans for the periods presented ($ in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Net periodic benefit cost:
Service cost	$	125		$	148		$	249		$	298
Interest cost		1,322			1,264			2,643			2,254
Expected return on plan assets		(1,560	)		(2,059	)		(3,118	)		(3,600	)
Recognized net loss due to settlement		375			525			750			525
Recognized net actuarial loss		736			1,374			1,472			2,768
Net periodic benefit cost	$	998		$	1,252		$	1,996		$	2,245

Supplemental Retirement Plan [Member]

Defined Benefit Plan Disclosure [Line Items]

Net periodic benefit Cost

Trustmark maintains a nonqualified supplemental retirement plan covering directors who elected to defer fees, key executive officers and senior officers.  The plan provides for defined death benefits and/or retirement benefits based on a participant's covered salary.  Trustmark has acquired life insurance contracts on the participants covered under the plan, which may be used to fund future payments under the plan.  The measurement date for the plan is December 31.  As a result of the BancTrust acquisition on February 15, 2013, Trustmark acquired a nonqualified supplemental retirement plan, which plan benefits were frozen prior to the acquisition date.  The following table presents information regarding net periodic benefit cost for Trustmark’s nonqualified supplemental retirement plans for the periods presented ($ in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Net periodic benefit cost:
Service cost	$	75	$	149	$	148	$	298
Interest cost		548		484		1,102		968
Amortization of prior service cost		62		63		125		126
Recognized net actuarial loss		163		259		333		518
Net periodic benefit cost	$	848	$	955	$	1,708	$	1,910