CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
Revenue	$ 7,000		$ 7,000	$ 5,000
Operating expenses:
Research and development	7,606	$ 8,086	29,286	26,115
General and administrative	3,521	2,075	10,130	7,840
Total operating expenses	11,127	10,161	39,416	33,955
Loss from operations	(4,127)	(10,161)	(32,416)	(28,955)
Other income:
Grant income	634	1,669	1,835	4,507
Interest income	332	19	1,240	47
Total other income	966	1,688	3,075	4,554
Loss before income taxes	(3,161)	(8,473)	(29,341)	(24,401)
Provision for income taxes	324		467	472
Net loss	(3,485)	(8,473)	(29,808)	(24,873)
Dividends declared		(9,142)		(9,142)
Net Loss per Share
Net loss attributable to common stockholders—basic and diluted	$ (3,485)	$ (17,615)	$ (29,808)	$ (34,015)
Net loss per share attributable to common stockholders—basic and diluted (in dollar per share)	$ (0.27)	$ (20.33)	$ (2.27)	$ (113.22)
Weighted average common stock outstanding—basic and diluted (in shares)	13,134,538	866,641	13,130,837	300,435
Other comprehensive loss
Net loss	$ (3,485)	$ (17,615)	$ (29,808)	$ (34,015)
Net unrealized (loss) gain on investments held	(32)		31
Comprehensive loss	$ (3,517)	$ (17,615)	$ (29,777)	$ (34,015)