Stock-Based Compensation - Schedule of Restricted Stock (Details) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($) $ / shares shares
Restricted stock award (RSA)
Number of Shares Outstanding [Roll Forward]
Beginning balance (in shares)	7,774,554
Granted (in shares)	0
Forfeited (in shares)	(1,749,137)
Ending balance (in shares)	6,025,417
Weighted Average Grant Date Fair Value Per Share
Weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.18
Forfeited (in dollars per share) | $ / shares	0.18
Weighted average grant date fair value (in dollars per share) | $ / shares	$ 0.17
Outstanding, aggregate intrinsic value | $	$ 19.6
Restricted stock units (RSUs)
Number of Shares Outstanding [Roll Forward]
Beginning balance (in shares)	2,846,049
Granted (in shares)	403,737
Forfeited (in shares)	(733,839)
Ending balance (in shares)	2,515,947
Weighted Average Grant Date Fair Value Per Share
Outstanding, aggregate intrinsic value | $	$ 8.2
Outstanding, weighted average remaining contractual life	1 year 6 months 24 days