Consolidated and combined statements of operations and comprehensive loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating expenses
Research and development	$ 15,799	$ 18,079	$ 7,599
General and administrative	5,541	4,296	1,777
Total operating expenses	21,340	22,375	9,376
Other (expenses) income
Interest expense and financing costs	(99)	(462)	(43)
Change in fair value of derivative liabilities (Note 6(a))	(52)	949	962
Amortization and extinguishment of remaining discount on preferred shares upon conversion of preferred shares		(1,884)	(386)
Other (expenses) income	(369)	(255)	109
Total other income (expenses)	(520)	(1,652)	642
Net loss before income taxes	(21,860)	(24,027)	(8,734)
Income tax recovery (Note 10)			5
Net loss	$ (21,860)	$ (24,027)	$ (8,729)
Net loss per common stock - basic and diluted (Note 9)	$ (1.73)	$ (2.75)	$ (49.52)
Basic and diluted weighted average common stock outstanding (Note 9)	12,637,839	8,667,387	301,745
Comprehensive loss:
Net loss	$ (21,860)	$ (24,027)	$ (8,729)
Other comprehensive loss - unrealized loss on securities available for sale	(286)	(4)
Comprehensive loss	$ (22,146)	$ (24,031)	$ (8,729)