Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Summary of Activity for Restricted Stock Awards

The following table provides a summary of activity with regard to restricted stock awards in the three months ended March 31, 2018:

	Number of Shares			Weighted Average Grant Date Fair Value
Unvested at beginning of year		5,574,167		$	15.38
Granted		2,420,523			13.61
Vested		(615,482	)		15.30
Canceled		(72,380	)		14.92
Unvested at end of period		7,306,828			14.80