Statements of Operations and Comprehensive Income (Loss) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Collaboration revenue (note 9)	$ 4,044,000	$ 5,296,000	$ 8,054,000	$ 10,297,000
Royalties	2,000	2,000	2,000	2,000
Revenues	4,046,000	5,298,000	8,056,000	10,299,000
Operating expenses:
Research and development	3,669,000	2,566,000	7,096,000	5,099,000
General and administrative	2,058,000	1,213,000	3,629,000	2,513,000
Total operating expenses	3,847,000	3,920,000	13,994,000	7,889,000
Income (loss) from operations	199,000	1,378,000	(5,938,000)	2,410,000
Other income (expense):
Interest income	163,000	137,000	315,000	278,000
Foreign exchange gain (loss)	806,000	(285,000)	(2,365,000)	(85,000)
Net income (loss)	1,168,000	1,230,000	(7,988,000)	2,603,000
Net income attributable to participating securities		1,230,000		2,603,000
Net income (loss) attributable to common shareholders	$ 1,168,000	$ 0	$ (7,988,000)	$ 0
Net income (loss) per common share (note 5):
Basic	$ 0.08		$ (0.56)
Diluted	$ (0.07)		$ (0.56)
Weighted-average shares outstanding (note 5):
Basic	14,241,827	1,347,237	14,227,203	1,346,274
Diluted	15,129,978	1,347,237	14,227,203	1,346,274
Other comprehensive income (loss):
Foreign currency translation adjustment		$ 919,000		$ 10,000
Comprehensive income (loss)	$ 1,168,000	2,149,000	$ (7,988,000)	2,613,000
General and Administrative [Member]
Operating expenses:
General and administrative - stock based compensation (note 3 and 6)	$ (1,880,000)	$ 141,000	$ 3,269,000	$ 277,000