Employee and Consultant Equity-Based Compensation - Stock Option Supplemental Information (Details) $ / shares in Units, $ in Thousands	Dec. 31, 2015 USD ($) yr $ / shares shares	Apr. 30, 2012 USD ($)
Aggregate intrinsic value (in thousands) | $		$ 5,900
Options Outstanding
Number of options (shares) | shares	6,167,170
Weighted average remaining contractual term (in years) | yr	7.19
Weighted average exercise price (dollars per share)	$ 6.91
Weighted average fair value (dollars per share)	$ 5.43
Aggregate intrinsic value (in thousands) | $	$ 86,102
Options Exercisable
Number of options (shares) | shares	1,536,520
Weighted average remaining contractual term (in years) | yr	7.18
Weighted average exercise price (dollars per share)	$ 7.11
Weighted average fair value (dollars per share)	$ 5.48
Aggregate intrinsic value (in thousands) | $	$ 21,734
Options Vested and Expected to Vest
Number of options (shares) | shares	6,088,562
Weighted average remaining contractual term (in years) | yr	7.18
Weighted average exercise price (dollars per share)	$ 6.80
Weighted average fair value (dollars per share)	$ 5.34
Aggregate intrinsic value (in thousands) | $	$ 85,804