Summarized Quarterly Data (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	3 Months Ended								12 Months Ended
	May 16, 2014	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
Quarterly Financial Information Disclosure [Abstract]
Revenue		$ 14,899	$ 8,797	$ 9,161	$ 7,674	$ 9,921	$ 7,168	$ 8,942	$ 6,981	$ 40,531	$ 33,012	$ 44,326
Cost of goods sold		17,775	4,692	4,310	3,382	7,099	5,354	4,630	4,158	15,817	21,241	19,496
Gross profit		(2,876)	4,105	4,851	4,292	2,822	1,814	4,312	2,823
Loss on extinguishment of debt	1,254	0	0	(1,254)	0					(1,254)	0	0
Impairment of long-lived assets		0	0	(838)	0					(838)	0	0
Gain on sale of business		0	0	79,980	0					79,980	0	0
Net income (loss)		$ (20,521)	$ (12,825)	$ 62,865	$ (20,932)	$ (35,617)	$ (10,852)	$ (13,332)	$ (21,055)	$ 8,587	$ (80,856)	$ (47,386)
Net loss per share, basic and diluted (in dollars per share)						$ (0.28)	$ (0.10)	$ (0.13)	$ (0.21)	$ 0.06	$ (0.74)	$ (0.59)
Net income (loss) per share, basic (in dollars per share)		$ (0.14)	$ (0.09)	$ 0.45	$ (0.16)
Net income (loss) per share, diluted (in dollars per share)		$ (0.14)	$ (0.09)	$ 0.45	$ (0.20)
Weighted average shares outstanding, basic and diluted						127,869	104,682	100,876	100,809
Weighted-average shares outstanding, basic (in shares)		150,016	141,045	139,985	139,309					142,607	108,568	80,558
Weighted average common shares outstanding, diluted		150,040	141,045	139,985	145,323					145,046	108,568	80,558