Equity-Based Compensation - Schedule of Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares
Employees [Member]
Number of Options Outstanding, beginning of year | shares	836,256
Granted | shares	584,795
Forfeited | shares	(208,382)
Number of Options Outstanding, end of year | shares	1,212,669
Number of Options Vested and expected to vest | shares	1,212,669
Number of Options Exercisable at end of year | shares	747,788
Weighted Average Exercise Price Outstanding, beginning of year	$ 16.82
Weighted Average Exercise Price Granted	0.50
Weighted Average Exercise Price Exercised
Weighted Average Exercise Price Forfeited	34.09
Weighted Average Exercise Price Outstanding, end of year	5.98
Weighted Average Exercise Price Vested and expected to vest	5.98
Outstanding, end of year	$ 8.25
Weighted Average Remaining Contracted Term Outstanding, beginning of year	4 years 5 months 20 days
Weighted Average Remaining Contracted Term Granted	0 years
Weighted Average Remaining Contracted Term Forfeited	0 years
Weighted Average Remaining Contracted Term Outstanding, end of year	7 years 1 month 20 days
Weighted Average Remaining Contracted Term Vested and expected to vest	7 years 1 month 20 days
Weighted Average Remaining Contracted Term Exercisable at end of year	4 years 11 months 15 days
Aggregate Intrinsic Value Outstanding, beginning of year | $
Aggregate Intrinsic Value Granted
Aggregate Intrinsic Value Exercised | $
Aggregate Intrinsic Value Forfeited
Aggregate Intrinsic Value Outstanding, end of year | $
Aggregate Intrinsic Value Vested and expected to vest | $
Aggregate Intrinsic Value Exercisable at end of year | $
Non-Employees [Member]
Number of Options Outstanding, beginning of year | shares	271,500
Granted | shares	605,877
Forfeited | shares	(40,313)
Number of Options Outstanding, end of year | shares	837,065
Number of Options Vested and expected to vest | shares	837,065
Number of Options Exercisable at end of year | shares	278,775
Weighted Average Exercise Price Outstanding, beginning of year	$ 10.41
Weighted Average Exercise Price Granted	0.42
Weighted Average Exercise Price Exercised
Weighted Average Exercise Price Forfeited	19.67
Weighted Average Exercise Price Outstanding, end of year	2.73
Weighted Average Exercise Price Vested and expected to vest	2.73
Outstanding, end of year	$ 7.34
Weighted Average Remaining Contracted Term Outstanding, beginning of year	4 years 7 months 28 days
Weighted Average Remaining Contracted Term Granted	0 years
Weighted Average Remaining Contracted Term Exercised	0 years
Weighted Average Remaining Contracted Term Forfeited	0 years
Weighted Average Remaining Contracted Term Outstanding, end of year	6 years 11 months 4 days
Weighted Average Remaining Contracted Term Vested and expected to vest	6 years 11 months 4 days
Weighted Average Remaining Contracted Term Exercisable at end of year	5 years
Aggregate Intrinsic Value Outstanding, beginning of year | $
Aggregate Intrinsic Value Granted
Aggregate Intrinsic Value Exercised | $
Aggregate Intrinsic Value Forfeited
Aggregate Intrinsic Value Outstanding, end of year | $
Aggregate Intrinsic Value Vested and expected to vest | $
Aggregate Intrinsic Value Exercisable at end of year | $