Stock-Based Compensation - Schedule of Restricted Common Stock Activity (Details)	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of Shares Non-vested, Beginning Balance | shares	3,850,000
Number of Shares, Granted | shares	2,250,000
Number of Shares, Vested | shares	(2,100,000)
Number of Shares, Forfeited | shares	(550,000)
Number of Shares Non-vested, Ending Balance | shares	3,450,000
Weighted Average Grant Date Fair Value Non-vested, Beginning Balance | $ / shares	$ 1.42
Weighted Average Grant Date Fair Value, Granted | $ / shares	1.48
Weighted Average Grant Date Fair Value, Vested | $ / shares	1.44
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	1.06
Weighted Average Grant Date Fair Value Non-vested, Ending Balance | $ / shares	$ 1.52