Interim Period Reporting (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Interim Period Reporting (Textual)
Net loss		$ (573)		$ (693)
Accumulated deficit		(185,795)	$ (185,222)	185,200
Net cash used in operating activities		$ (460)		$ (561)
Shelf registration common stock offering price	$ 20,000
Shelf registration statement expiration date	Mar. 24, 2020
Common Stock [Member]
Interim Period Reporting (Textual)
Issuance of common stock			2,941,000