Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue (note 4)
Collaborations and contracts	$ 2,310	$ 1,144	$ 5,830	$ 4,833
Licensing fees, milestone and royalty payments	1,130	667	2,292	1,408
Total revenue	3,440	1,811	8,122	6,241
Expenses
Research, development, collaborations and contracts	9,690	9,298	20,247	17,502
General and administrative	7,662	1,787	10,378	3,837
Depreciation of property and equipment	147	$ 149	267	$ 283
Acquisition costs (note 3)	361		9,656
Total expenses	17,860	$ 11,234	40,548	$ 21,622
Loss from operations	(14,420)	(9,423)	(32,426)	(15,381)
Other income (losses)
Interest income	81	257	283	404
Foreign exchange gains (losses)	(2,571)	(2,728)	4,467	(1,285)
(Increase) decrease in fair value of warrant liability (note 2)	2,024	5,813	801	(7,803)
Net loss	$ (14,886)	$ (6,081)	$ (26,875)	$ (24,065)
Loss per common share
Basic and diluted (in dollars per share)	$ (0.27)	$ (0.28)	$ (0.64)	$ (1.15)
Weighted average number of common shares
Basic and diluted (in shares)	54,255,804	22,063,438	42,297,517	20,938,503
Comprehensive loss
Cumulative translation adjustment	$ 3,223	$ 3,774	$ (5,951)	$ 1,616
Comprehensive loss	$ (11,663)	$ (2,307)	$ (32,826)	$ (22,449)