Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue	$ 383	$ 0
Revenue - from a related party	277	500
Total revenue	660	500
Operating expenses
Research and development	7,736	1,642
Research and development - licenses acquired	83	7,439
General and administrative	7,932	3,490
Total operating expenses	15,751	12,571
Loss from operations	(15,091)	(12,071)
Other income (expenses)
Interest income	75	82
Interest expense	(620)	(331)
Change in fair value of subsidiary's warrant liabilities	(89)	0
Change in fair value of investments	(918)	(215)
Total other income (expenses)	(1,552)	(464)
Net loss	(16,643)	(12,535)
Less: net loss attributable to non-controlling interests	4,438	479
Net loss attributable to common stockholders	$ (12,205)	$ (12,056)
Basic and diluted net loss per common share	$ (0.31)	$ (0.31)
Weighted average common shares outstanding—basic and diluted	39,658,188	38,574,702