Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Expenses Associated with Share-Based Compensation Plans

The following table presents compensation expense associated with the Company’s share-based compensation plans:

	Three Months Ended March 31,
(in thousands)	2017		2016
Expense:
RSUs	$	16,014	$	14,981
Stock options		67		67
Employee stock purchase plan		951		810
	$	17,032	$	15,858

Summary of RSU Activity

The following table summarizes RSU activity for the three months ended March 31, 2017:

(in thousands, except weighted-average grant-date fair value)	Shares			Weighted-average grant-date fair value
RSUs unvested at December 31, 2016		1,510		$	33.38
Granted during 2017		828		$	39.27
Vested during 2017		(787	)	$	34.26
Forfeited during 2017		(7	)	$	33.16
RSUs unvested at March 31, 2017		1,544		$	36.09