Interim Period Reporting (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 13, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Interim Period Reporting (Textual)
Net loss		$ (1,368)	$ (3,245)	$ (5,232)	$ (11,127)
Accumulated deficit		$ (171,161)		(171,161)		$ (165,929)
Net cash used in operating activities				$ (4,886)	(9,053)
Proceeds from issuance of common stock					$ 9,253
Common stock available for issuance under shelf registration						5,000,000
Subsequent Event [Member]
Interim Period Reporting (Textual)
Issuance of common stock, shares	3,200,000
Share price	$ 1.90
Proceeds from issuance of common stock	$ 5,600
Common stock available for issuance under shelf registration	1,800,000