Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net product sales	$ 56	$ 20	$ 58	$ 46	$ 44	$ 68	$ 62	$ 26	$ 180	$ 200	$ 153
Cost of sales	460	512	547	793	1,392	1,792	2,104	2,213	2,312	7,501	7,804
Gross Profit	(404)	(492)	(489)	(747)	(1,348)	(1,724)	(2,042)	(2,187)	(2,132)	(7,301)	(7,651)
Operating income (loss)									(29,954)	(30,503)	(29,390)
Net loss									(25,650)	(31,554)	(12,687)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net product sales											516
Cost of sales											275
Gross Profit											241
Operating income (loss)											27
Net loss											$ (2)