Equity Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Unvested Restricted Common Stock Activity

A summary of our unvested restricted stock activity during 2018 is as follows (shares in thousands):

	2018
	Shares			Weighted- Average Grant Date Fair Value
Unvested awards, beginning		1,222		$	36.84
Awards granted		552			45.57
Awards forfeited/cancelled		(135	)		40.07
Awards vested		(494	)		34.60
Unvested awards, ending		1,145		$	41.64