Share-Based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 shares
Number of Options
Outstanding balance at December 31, 2016 (in shares) | shares	403,986
Options granted (in shares) | shares	2,350,000
Options exercised (in shares) | shares	0	0
Options forfeited and expired (in shares) | shares	(352,629)
Outstanding balance at September 30, 2017 (in shares) | shares	2,401,357
Weighted Average Exercise Price Per Option
Outstanding balance (weighted average exercise price) at December 31, 2016 (in dollars per share) | $ / shares	$ 4.62
Granted (weighted average exercise price) (in dollars per share) | $ / shares	0.65
Exercised (weighted averaged exercise price) (in dollars per share) | $ / shares	0.00
Forfeited and Expired (weighted average exercise price) (in dollars per share) | $ / shares	1.09
Outstanding balance (weighted average exercise price) at September 30, 2017 (in dollars per share) | $ / shares	$ 1.25
Additional Disclosures
Number of options exercisable at September 30, 2017 (in shares) | shares	222,033
Weighted average exercise price of options exercisable at September 30, 2017 (in dollars per share) | $ / shares	$ 6.39
Weighted Average Remaining Contractual Life (Years), Outstanding at September 30, 3017	9 years 3 months 22 days
Weighted Average Remaining Contractual Life (Years), Exercisable at September 30, 2017	6 years 5 months 25 days
Aggregate Intrinsic Value, Outstanding at September 30, 2017 | $	$ 0
Aggregate Intrinsic Value, Exercisable at September 30, 2017 | $	$ 0