CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating expenses:
Research and development	$ 11,623	$ 11,002
General and administrative	3,780	3,189
Total operating expenses	15,403	14,191
Loss from operations	(15,403)	(14,191)
Other income:
Grant income	13	829
Interest income	124	492
Total other income	137	1,321
Loss before income taxes	(15,266)	(12,870)
Provision for income taxes		71
Net loss	$ (15,266)	$ (12,941)
Net Loss per Share
Net loss per share—basic and diluted (in dollar per share)	$ (1.15)	$ (0.99)
Weighted average common stock outstanding—basic and diluted (in shares)	13,291,563	13,126,595
Other comprehensive loss:
Net loss	$ (15,266)	$ (12,941)
Net unrealized gain on investments held	28	43
Comprehensive loss	$ (15,238)	$ (12,898)