Stock-Based Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2017

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

Movement in Outstanding Shares of Restricted Class A Common Stock and Weighted-Average Grant Date Fair Value Per Share

The following table details the movement in our outstanding shares of restricted class A common stock and the weighted-average grant date fair value per share:

	Restricted Class A Common Stock			Weighted-Average Grant Date Fair Value Per Share
Balance as of December 31, 2016		1,309,995		$	28.68
Granted		289,896			30.55
Vested		(335,536	)		27.78
Forfeited		(3,123	)		27.37
Balance as of September 30, 2017		1,261,232		$	29.35