Stock-Based Compensation (Details 3) - Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options, Non-vested - Beginning Balance	4,184,176	2,087,910	756,043
Stock Options, Granted	3,861,425	3,781,666	2,382,500
Stock Options, Vested/Exercised	(2,219,758)	(1,382,898)	(1,050,633)
Stock Options, Forfeited/Cancelled	(383,265)	(302,502)	0
Stock Options, Non-vested - Ending Balance	5,442,578	4,184,176	2,087,910
Weighted Average Grant Date Fair Value, Non-vested - Beginning Balance	$ 1.97	$ 2.3	$ 2.17
Weighted Average Grant Date Fair Value, Granted	0.8	2.12	2.09
Weighted Average Grant Date Fair Value, Vested/Exercised	1.87	2.02	2.35
Weighted Average Grant Date Fair Value, Forfeited/Cancelled	2.26	1.92	0
Weighted Average Grant Date Fair Value, Non-vested - Ending Balance	$ 1.18	$ 1.97	$ 2.3
Stock Options, Weighted average remaining period for vesting	1 year 11 months 26 days