Accounting for Shared-Based Payments - Schedule of Stock Option Activity (Details) - USD ($)	3 Months Ended		6 Months Ended		7 Months Ended	12 Months Ended	87 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 22, 2010	Dec. 31, 2015	Mar. 31, 2016
Exercise Price Per Share
Common stock issued in connection with exercise of stock options			$ 23,000
Weighted Average Remaining Contractual Term
Stock based compensation expense	$ 2,707,000	$ 5,389,000	$ 3,909,000	$ 7,794,000
Stock Options | Contingent vesting
Weighted Average Remaining Contractual Term
Stock based compensation expense							$ 0
Stock Options | $0.44-9.12
Number of Options
Balance outstanding, beginning of period (in shares)			20,953,375
Balance outstanding, end of period (in shares)	26,355,948		26,355,948			20,953,375
Exercisable at the end of the period (in shares)	10,715,881		10,715,881
Exercise Price Per Share
Exercise price, low end of the range (in dollars per share)			$ 0.44			$ 0.44
Exercise price, high end of the range (in dollars per share)			9.12			9.12
Weighted Average Exercise Price Per Share
Balance outstanding, beginning of period (in dollars per share)			3.86
Balance outstanding, end of period (in dollars per share)	$ 3.77		3.77			$ 3.86
Exercisable at the end of the period (in dollars per share)	$ 3.39		$ 3.39
Intrinsic Value
Intrinsic value of options outstanding	$ 0		$ 0			$ 42,438,000
Intrinsic value of options exercisable, end of period	$ 8,607,000		$ 8,607,000
Weighted Average Remaining Contractual Term
Balance			7 years 4 months 21 days			7 years 1 month 24 days
Exercisable at the end of the period			5 years 8 months 27 days
Stock Options | $0.44-9.12 | Contingent vesting
Number of Options
Balance outstanding, end of period (in shares)					2,159,500
Weighted Average Remaining Contractual Term
Grant date fair value					$ 28,600,000
Stock Options | $2.93-4.14
Number of Options
Granted (in shares)			5,943,000
Exercise Price Per Share
Exercise price, low end of the range (in dollars per share)			$ 2.93
Exercise price, high end of the range (in dollars per share)			4.14
Weighted Average Exercise Price Per Share
Granted (in dollars per share)			$ 3.70
Stock Options | 3.33
Number of Options
Exercised (in shares)			(6,667)
Exercise Price Per Share
Exercise price, low end of the range (in dollars per share)			$ 3.33
Exercise price, high end of the range (in dollars per share)			3.33
Weighted Average Exercise Price Per Share
Exercised (in dollars per share)			$ 3.33
Stock Options | $2.98-9.12
Number of Options
Forfeited (in shares)			(533,760)
Exercise Price Per Share
Exercise price, low end of the range (in dollars per share)			$ 2.98
Exercise price, high end of the range (in dollars per share)			9.12
Weighted Average Exercise Price Per Share
Forfeited (in dollars per share)			$ 6.04