Equity-Based Compensation - Restricted Stock and RSU Awards (Details) - Restricted stock and restricted stock unit $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares
Number of shares
Total granted and unvested at the beginning of the period (in shares) | shares	5,353,447
Granted (in shares) | shares	757,694
Vested (in shares) | shares	(826,675)
Forfeited (in shares) | shares	(195,400)
Total awarded and unvested at the end of the period (in shares) | shares	5,089,066
Weighted average grant date fair value
Total granted and unvested at the beginning of the period (in dollars per share) | $ / shares	$ 31.77
Granted (in dollars per share) | $ / shares	22.23
Vested (in dollars per share) | $ / shares	44.32
Forfeited (in dollars per share) | $ / shares	23.96
Total awarded and unvested at the end of the period (in dollars per share) | $ / shares	$ 28.56
Aggregate intrinsic value
Total awarded and unvested at the beginning of the period | $	$ 126,609
Total awarded and unvested at the end of the period | $	109,975
Additional equity compensation to be recognized over the remaining period | $	$ 105,600
Weighted average period for recognizing unrecognized stock-based compensation expense	1 year 10 months 24 days