Stock-Based Compensation and Warrants - Assumptions (Details) - $ / shares			1 Months Ended	12 Months Ended
	Oct. 10, 2014	Oct. 10, 2014	Nov. 18, 2016	Dec. 31, 2018	Oct. 10, 2018	Dec. 26, 2017
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Closing stock price	$ 61.25	$ 61.25		$ 0.56	$ 0.88	$ 18.55
Expected volatility	95.00%			110.00%
Risk free interest rate	1.39%			2.60%
Expected life of warrant (years)	5 years	5 years		9 months 15 days
Series A Warrants [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Closing stock price			$ 31.15	$ 0.56
Expected volatility			85.00%	92.50%
Risk free interest rate			1.58%	2.50%
Expected life of warrant (years)			4 years	1 year 10 months 24 days