Interim Period Reporting (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Interim Period Reporting (Textual)
Net loss		$ (1,086)	$ (809)	$ (2,923)	$ (2,466)
Accumulated deficit		$ (188,145)		(188,145)		$ (185,222)
Net cash used in operating activities				$ (2,873)	$ (2,275)
Shelf registration common stock offering price	$ 20,000
Shelf registration statement expiration date	Mar. 24, 2020