Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements Of Operations
Revenues	$ 33	$ 10
Operating costs and expenses
Amortization of patent portfolio	6,317	9,831
Compensation and related expenses (including stock-based compensation)	1,724	13,710
Professional fees	2,780	$ 4,520
Impairment of goodwill and patent portfolio	40,600
Rent	88	$ 864
Other selling, general and administrative	534	1,696
Total operating expenses	52,043	30,621
Loss from operations	(52,010)	(30,611)
Other income
Other income, net	276	31
Change in fair value of warrant liabilities	269	48
Total other income	545	79
Net loss	(51,465)	$ (30,532)
Deemed dividend related to immediate accretion of beneficial conversion feature of convertible preferred stock	(323)
Deemed capital contribution on extinguishment of preferred stock	9,485
Net loss attributable to common stockholders	$ (42,303)	$ (30,532)
Net loss per share attributable to common stockholders, basic and diluted	$ (24.98)	$ (29.41)
Weighted average number of common shares outstanding, Basic and diluted	1,693,365	1,038,326