Common Stock and Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Restricted Stock Unit Activity

The following table summarizes RSU activity during the six months ended June 30, 2017:

	Employees			Non-Employee Directors			Total
RSUs outstanding at January 1, 2017	872,785			80,207			952,992
RSUs granted	395,097			45,528			440,625
Shares issued upon vesting of RSUs	(221,992		)	(37,204		)	(259,196		)
RSUs canceled or forfeited(1)	(296,696		)	(2,112		)	(298,808		)
RSUs outstanding at June 30, 2017	749,194			86,419			835,613
Weighted average grant date fair value	$	17.91		$	18.46		$	17.97

(1) Pursuant to the terms of our plans, employees have the option of forfeiting RSUs to cover their minimum statutory tax withholding when shares are issued. Any RSUs surrendered or canceled in satisfaction of participants’ tax withholding obligations are not available for future grants under the plans.

The following table summarizes PSU activity during the six months ended June 30, 2017:

	PSUs		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2017	90,583		$	19.13
Granted	158,402		18.84
Vested	—		—
Forfeited or canceled	(81,217	)	19.29
Outstanding at June 30, 2017	167,768		$	18.78

Summary of Phantom Share Activity

The following table summarizes the phantom share activity during the six months ended June 30, 2017:

	Shares		Weighted Average Grant Date Fair Value
Outstanding at January 1, 2017	1,361,062		$	17.78
Granted	767,521		18.47
Converted/paid	(600,346	)	17.00
Forfeited	(140,783	)	18.27
Outstanding at June 30, 2017	1,387,454		$	18.45

Summary of Stock Option Activity

The following table summarizes stock option activity during the six months ended June 30, 2017:

	Options		Weighted Average Exercise Price		Weighted Average Contractual Life (Years)	Aggregate Intrinsic Value
Options outstanding and exercisable at January 1, 2017	2,038,829		$	19.78
Forfeited and canceled	(557,329	)	26.18
Exercised	(49,879	)	15.12
Options outstanding and exercisable at June 30, 2017	1,431,621		$	17.45	1.15	$	2,709,128

Summary of Share-Based Compensation Expense Recognized

The following table summarizes the share-based compensation expense recognized during the three and six months ended June 30, 2017 and 2016:

	Three Months Ended June 30					Six Months Ended June 30
	2017			2016		2017			2016
	(In thousands)
RSUs	$	1,046		$	2,068	$	2,654		$	3,437
PSUs	(1,051		)	451		(551		)	839
Phantom shares	2,707			3,210		4,556			7,521
Total	$	2,702		$	5,729	$	6,659		$	11,797