Share-Based Compensation - Summary of Incentive Unit Activity and Changes (Details) - Incentive Unit Award	9 Months Ended
	Sep. 30, 2016 $ / shares shares
Units
Non-vested at the beginning of the period (in shares) | shares	604,942
Granted (in shares) | shares	20,758
Vested (in shares) | shares	(2,451)
Forfeited (in shares) | shares	(38,399)
Non-vested at the end of the period (in shares) | shares	584,850
Weighted-Average Grant-Date Fair Value
Non-vested at the beginning of the period (in dollars per share) | $ / shares	$ 19.64
Granted (in dollars per share) | $ / shares	10.92
Vested (in dollars per share) | $ / shares	19.73
Forfeited (in dollars per share) | $ / shares	19.48
Non-vested at the end of the period (in dollars per share) | $ / shares	$ 19.34