Warrants (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Sep. 17, 2018
Class of Warrant or Right [Line Items]
Issuance of warrants to purchase a common stock			1,200,000
Exercise price of warrants	$ 7.33	$ 7.33	$ 0.01
Warrants expiration date			Aug. 01, 2028
Number of outstanding common stock warrants	1,710,609	1,710,609
Unrealized loss on warranty derivative liability	$ 15
2018 Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value of warrants	5,100
2018 Warrants [Member] | Investors [Member]
Class of Warrant or Right [Line Items]
Issuance of warrants to purchase a common stock			1,200,000
Exercise price of warrants			$ 0.01
Warrants expiration date			Aug. 01, 2028
2019 Warrants [Member]
Class of Warrant or Right [Line Items]
Fair value of warrants	$ 9
2019 Warrants [Member] | Investors [Member] | April 1, 2019 [Member]
Class of Warrant or Right [Line Items]
Issuance of warrants to purchase a common stock	1,200,000
Exercise price of warrants	$ 0.01
Warrants expiration date	Apr. 01, 2029
Number of outstanding common stock warrants	2,910,609