Condensed consolidated statements of operations and comprehensive loss - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Operating expenses
Research and development	$ 5,777	$ 4,881
General and administrative	2,745	1,953
Total operating expenses	8,522	6,834
Other income (Note 6)	206	123
Net loss before income taxes	(8,316)	(6,711)
Net loss	$ (8,316)	$ (6,711)
Net loss per common stock - basic and diluted (Note 7)	$ (0.36)	$ (0.39)
Basic and diluted weighted average number of common stock outstanding	23,423,150	17,211,986
Comprehensive loss:
Net loss	$ (8,316)	$ (6,711)
Other comprehensive (loss) income - unrealized (loss) gain on available-for-sale securities	(36)	243
Comprehensive loss	$ (8,352)	$ (6,468)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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