Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Consolidated Statements Of Operations
Revenue	$ 2	$ 2	$ 9	$ 8
Operating costs and expenses
Amortization of patents	2,476	134	7,354	134
Compensation and related expenses (including stock-based compensation)	1,799	6,393	12,546	7,129
Depreciation		3		24
Other selling, general and administrative	889	2,789	4,865	3,895
Total operating expenses	5,164	9,319	24,765	11,182
Loss from operations	(5,162)	(9,317)	(24,756)	(11,174)
Other income (expenses)
Other income	17		34
Fair value adjustments for warrant liabilities	1	37	47	(2,610)
Total other income (expenses)	18	37	81	(2,610)
Net loss	$ (5,144)	$ (9,280)	$ (24,675)	$ (13,784)
Net loss per share, basic and diluted	$ (0.18)	$ (6.93)	$ (1.47)	$ (14.43)
Weighted average number of shares outstanding Basic and diluted	28,065,251	1,339,300	16,735,940	955,292