Stock and Incentive Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Restricted Stock Grants

The following table summarizes Trustmark’s performance award activity for the periods presented:

	Years Ended December 31,
	2017					2016					2015
				Weighted-					Weighted-					Weighted-
				Average					Average					Average
				Grant-Date					Grant-Date					Grant-Date
	Shares			Fair Value		Shares			Fair Value		Shares			Fair Value
Nonvested shares, beginning of year		237,136		$	26.27		212,309		$	24.14		181,195		$	24.98
Granted		58,406			33.31		99,116			20.18		84,899			22.71
Released from restriction		(67,279	)		34.78		(40,888	)		32.84		(47,360	)		24.97
Forfeited		(14,747	)		28.42		(33,401	)		30.01		(6,425	)		24.97
Nonvested shares, end of year		213,516		$	25.37		237,136		$	26.27		212,309		$	24.14

The following table summarizes Trustmark’s time-vested award activity for the periods presented:

	Years Ended December 31,
	2017					2016					2015
				Weighted-					Weighted-					Weighted-
				Average					Average					Average
				Grant-Date					Grant-Date					Grant-Date
	Shares			Fair Value		Shares			Fair Value		Shares			Fair Value
Nonvested shares, beginning of year		322,056		$	22.65		306,657		$	24.56		263,905		$	24.66
Granted		105,524			33.79		139,791			20.66		121,314			23.61
Released from restriction		(101,289	)		25.35		(108,241	)		23.74		(67,087	)		24.31
Forfeited		(5,934	)		26.52		(16,151	)		22.24		(11,475	)		24.22
Nonvested shares, end of year		320,357		$	25.40		322,056		$	22.65		306,657		$	24.56

Compensation Expense for Stock and Incentive Plans

The following table presents information regarding compensation expense for awards under the Plan for the periods presented ($ in thousands):

									Weighted
									Average Life
	Recognized Compensation Expense						Unrecognized		ofUnrecognized
	for Years Ended December 31,						Compensation		Compensation
	2017		2016		2015		Expense		Expense
Performance awards	$	1,387	$	1,171	$	1,201	$	1,783		1.66
Time-vested awards		2,922		2,513		2,467		3,058		1.80
Total	$	4,309	$	3,684	$	3,668	$	4,841