Interim Period Reporting (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Interim Period Reporting [Abstract]
Net loss	$ (1,792)	$ (3,874)	$ (3,864)	$ (7,882)
Accumulated deficit	$ (169,793)		(169,793)		$ (165,929)
Net cash used in operating activities			$ (2,819)	$ (6,010)
Shares registered and available for issuance		5,000,000