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Significant Accounting Policies (Details) - USD ($)	3 Months Ended	9 Months Ended
Significant Accounting Policies (Details) - USD ($)	Sep. 30, 2015	Sep. 30, 2015	Sep. 30, 2014
Deferred Offering Costs
Deferred financing costs	$ 1,879,791	$ 1,879,791
Series A convertible preferred stock
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		31,116,391	31,116,391
Series A-1 convertible preferred stock
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		9,074,511	9,074,511
Series B convertible preferred stock
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		58,948,735
Stock options
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		510,884	552,726
Warrants on Common Stock
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		657,474	657,474
Warrants on Preferred Stock
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		625,208	625,208
Investor Rights Obligation
Net Loss Per Share of Common Stock, Basic and Diluted
Anti-dilutive amount		53,351,117
Pro Forma Member \| Common stock
Unaudited Pro Forma Presentation
Shares of common stock resulting from conversion of preferred stock (in shares)	3,980,422	3,980,422