Equity-Based Compensation - Schedule of Stock-based Compensation (Details) - Options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Options
Beginning balance (shares)	2,904,177
Granted (shares)	784,048
Exercised (shares)	(155,705)
Expired or forfeited (shares)	(419,342)
Ending balance (shares)	3,113,178
Outstanding at end of year - vested and unvested expected to vest (in shares)		2,915,930
Exercisable at end of year (in shares)		1,536,405
Weighted Average Exercise Price
Beginning balance (USD per share)	$ 31.97	$ 31.97	$ 34.97
Granted (USD per share)	24.59
Exercised (USD per share)	17.99
Expired and/or forfeited (USD per share)	44.10
Ending balance (USD per share)	$ 31.97
Outstanding at end of year - vested and unvested expected to vest (USD per share)		31.53
Exercisable at end of year (USD per share)		$ 27.92
Stock Option Activity, Additional Disclosures
Weighted Average Remaining Contractual Term, Outstanding	7 years 4 months 24 days
Weighted Average Remaining Contractual Term, Outstanding at end of year - vested and unvested expected to vest (in years)	7 years 4 months 24 days
Weighted Average Remaining Contractual Term, Exercisable at end of year (in years)	6 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding at end of year		$ 28,113
Aggregate Intrinsic Value, Outstanding at end of year, vested and unvested expected to vest		27,038
Aggregate Intrinsic Value, Exercisable at end of year		$ 17,928