Going Concern and Management plans (Details Textual) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Sale Of Stock Offering Price	$ 8,500
Retained Earnings (Accumulated Deficit)	(301,285)	$ (299,163)
Restricted Cash and Investments	1,136
Common Stock, Value, Subscriptions	$ 5,400
Sale of Stock, Number of Shares Issued in Transaction	3,155,000
Proceeds from Issuance of Common Stock	$ 1,695
Asset Purchase Agreement Amount Receivable	$ 4,000