Stock-Based Compensation (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Stock Based Compensation [Line Items]
Outstanding, Number of Options, Beginning Balance	767,476
Granted, Number of Options	484,781
Exercised, Number of Options	0
Forfeited or expired, Number of Options	(485,406)
Outstanding, Number of Options, Ending Balance	766,851	767,476
Exercisable, Number of Options	282,070
Outstanding, Weighted Average Exercise Price, Beginning Balance (in dollars per share)	$ 7.90
Granted, Weighted Average Exercise Price (in dollars per share)	1.94
Exercised, Weighted Average Exercise Price (in dollars per share)	0
Forfeited or expired, Weighted Average Exercise Price (in dollars per share)	7.57
Outstanding, Weighted Average Exercise Price, Ending Balance (in dollars per share)	4.34	$ 7.90
Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 8.45
Outstanding, Weighted Average Remaining Contractual Life (in years)	6 years 11 months 26 days	4 years 3 months 11 days
Exercisable, Weighted Average Remaining Contractual Life (in years)	2 years 6 months 11 days
Outstanding, Aggregate Intrinsic Value, Balance	$ 34
Granted, Aggregate Intrinsic Value	0
Exercised, Aggregate Intrinsic Value	0
Forfeited or expired, Aggregate Intrinsic Value	0
Outstanding, Aggregate Intrinsic Value, Balance	32	$ 34
Exercisable, Aggregate Intrinsic Value	$ 32