Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Revenues		$ 2	$ 2	$ 9
Operating costs and expenses
Amortization of patent portfolio	$ 722	2,476	5,594	7,354
Compensation and related expenses (including stock-based compensation)	336	1,799	1,001	12,532
Professional fees	$ 787	$ 726	2,067	$ 3,692
Impairment of goodwill and intangible assets			37,212
Rent	$ 22	$ 71	66	$ 208
Other selling, general and administrative	92	92	440	979
Total operating expenses	1,959	5,164	46,380	24,765
Loss from operations	(1,959)	(5,162)	(46,378)	(24,756)
Other income (expenses)
Other income, net	7	17	32	34
Change in fair value of warrant liabilities	(774)	1	(774)	47
Total other (expenses) income	(767)	18	(742)	81
Net loss	$ (2,726)	$ (5,144)	$ (47,120)	$ (24,675)
Net loss per share, basic and diluted	$ (0.08)	$ (0.18)	$ (1.56)	$ (1.47)
Weighted average number of common shares outstanding, Basic and diluted	33,143,483	28,065,251	30,141,115	16,735,940