Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

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

Summary of Restricted Stock Unit Activity

The table below summarizes restricted stock unit activity for the year ended December 31, 2016:

	Restricted Stock Units		Weighted Average Grant Date Fair Value
Restricted stock units outstanding at December 31, 2015	1,029,949		$	46.97
Granted	199,148		51.55
Released	(181,684	)	44.58
Forfeited	(21,420	)	48.92
Restricted stock units outstanding at December 31, 2016	1,025,993		48.24