Share-Based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2016 shares
Number of Options
Outstanding balance at December 31, 2016 (in shares) | shares	403,986
Options granted (in shares) | shares	2,075,000
Options exercised (in shares) | shares	0	0
Options forfeited and expired (in shares) | shares	(25,053)
Outstanding balance at June 30, 2017 (in shares) | shares	2,453,933.000
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	3.17
Outstanding balance (weighted average exercise price) at June 30, 2017 (in dollars per share) | $ / shares	$ 1.28
Additional Disclosures
Number of options exercisable at June 30, 2017 (in shares) | shares	241,041
Weighted average exercise price of options exercisable at June 30, 2017 (in dollars per share) | $ / shares	$ 6.11
Weighted Average Remaining Contractual Life, options outstanding	9 years 5 months 27 days
Weighted Average Remaining Contractual Life, options exercisable	6 years 9 months 10 days
Aggregate Intrinsic Value of options outstanding | $	$ 0
Aggregate Intrinsic Value of options exercisable | $	$ 0