Equity-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Time-Vesting and Performance Vesting Awards

The activity related to the Company’s time-vesting and performance-vesting awards during the nine months ended September 30, 2018 is as follows: 

						Performance-Vesting Restricted Awards
	Time-Vesting Restricted Awards					Bonus Performance Restricted Awards					Long-Term Incentive Performance Restricted Awards					2.75x Performance Restricted shares
	Shares/Units			Weighted Average Grant Date Fair Value per Award		Shares/Units			Weighted Average Grant Date Fair Value per Award		Shares/Units			Weighted Average Grant Date Fair Value per Award		Shares			Weighted Average Grant Date Fair Value per Share
Outstanding at December 31, 2017		1,852,512		$	17.09		805,245		$	18.09		864,572		$	18.50		616,793		$	3.56
Granted		345,310		$	17.35		726,501		$	14.85		1,171,733		$	15.04		—			—
Vested		(503,043	)	$	17.15		(69,221	)	$	18.07		(9,010	)	$	18.79		—			—
Forfeited		(554,956	)	$	17.74		(815,330	)	$	17.75		(733,763	)	$	17.74		(616,793	)	$	3.56
Outstanding at September 30, 2018		1,139,823		$	16.83		647,195		$	14.87		1,293,532		$	15.79		—			—

Schedule of Activity Related to Stock Option Awards

The activity related to the Company’s stock option awards during the nine months ended September 30, 2018 is as follows:

	Options			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)		Aggregate Intrinsic Value       (in thousands)
Outstanding at December 31, 2017		2,923,448		$	18.78
Forfeited		(368,373	)	$	18.01
Expired		(1,493,902	)	$	19.46
Exercised		(176,122	)	$	18.12
Outstanding at September 30, 2018		885,051		$	18.08		7.07	$	11,815
Exercisable at September 30, 2018		493,318		$	18.22		6.96	$	6,518