Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Share-Based Compensation Expense

The following table summarizes share-based compensation expense:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in thousands)	2018			2017			2018			2017
Performance unit incentive plan (“PUP”)	$	1,607		$	3,941		$	3,125		$	7,184
Restricted stock		609			672			1,779			2,069
Restricted stock units		78			124			152			231
Share-based compensation before income tax benefit		2,294			4,737			5,056			9,484
Income tax benefit		(580	)		(1,752	)		(1,276	)		(3,524	)
Share-based compensation, net of income tax benefit	$	1,714		$	2,985		$	3,780		$	5,960

Summary of Activity of the Outstanding Share-Based Compensation Awards

The following table summarizes the activity of the outstanding share-based compensation awards:

	PUP Awards					Restricted Stock					Restricted Stock Units
	Shares			Weighted-Average Grant Date Fair Value		Shares			Weighted-Average Grant Date Fair Value		Shares			Weighted-Average Grant Date Fair Value
Balance at December 31, 2017		239,338		$	32.80		206,899		$	33.16		12,750		$	30.94
Granted		76,925		$	52.03		49,608		$	52.34		3,898		$	52.54
Vested		(75,761	)	$	27.29		(72,934	)	$	27.41		(4,300	)	$	27.35
Forfeited		(693	)	$	51.22		(6,500	)	$	39.95		(258	)	$	37.69
Balance at September 30, 2018		239,809		$	40.65		177,073		$	40.66		12,090		$	39.04

Summary of Stock Option Activity

Stock Options

The following table summarizes stock option activity:

	Shares			Weighted-Average Exercise Price
Options outstanding and exercisable at December 31, 2017		63,773		$	16.62
Exercised		(5,084	)	$	16.62
Options outstanding and exercisable at September 30, 2018		58,689		$	16.62