Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2017	Jun. 30, 2017	Jun. 30, 2018
Number of common stock issued, shares	2,793,000	9,900,000
Warrants to purchase shares of common stock	855,000
Gross proceeds from equity offerings	$ 12,200
Warrants exercise price description		Each Firm Share and accompanying Base Warrant was sold for a combined effective price of $1.10, and each Pre-Funded Warrant and accompanying Base Warrant was sold for a combined effective price of $1.09.
Gross proceeds from warrants		$ 13,700
Net proceeds from warrants		$ 12,300
Base Warrants [Member]
Warrants to purchase shares of common stock		12,500,000
Warrant exercise price		$ 1.25
Pre-Funded Warrants [Member]
Warrants to purchase shares of common stock		2,600,000
Warrant exercise price		$ 0.01	$ 0.01
Termination Agreement [Member] | RedPath Equityholder Representative, LLC [Member]
Warrants to purchase shares of common stock	100,000
Warrant term	5 years
Common stock price, per share	$ 4.69
RedPath Debt Exchange and conversion of Senior Convertible Notes [Member]
Number of common stock issued, shares	3,795,429