Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 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
	March 31,
(in thousands)	2018			2017
Performance unit incentive plan (“PUP”)	$	194		$	1,316
Restricted stock		503			623
Restricted stock units		20			60
Share-based compensation before income tax benefit		717			1,999
Income tax benefit		(181	)		(744	)
Share-based compensation, net of income tax benefit	$	536		$	1,255

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		71,625		$	52.15		41,457		$	52.15		3,669		$	52.28
Vested		(75,761	)	$	27.29		(54,458	)	$	27.35		(4,300	)	$	27.35
Forfeited		—		$	—		(1,156	)	$	36.37		(258	)	$	37.69
Balance at March 31, 2018		235,202		$	40.46		192,742		$	38.87		11,861		$	38.70

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 March 31, 2018		58,689		$	16.62