Condensed consolidated statements of operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Operating expenses
Research and development	$ 4,843	$ (1,995)	$ 10,341	$ (1,891)
General and administrative	4,926	2,423	8,499	4,978
Total operating expenses	9,769	428	18,840	3,087
Other income, net	23	427	452	878
Net loss	$ (9,746)	$ (1)	$ (18,388)	$ (2,209)
Net loss per common stock – basic and diluted	$ (0.20)		$ (0.37)	$ (0.09)
Basic and diluted weighted average number of common stock outstanding	49,392,533	23,537,368	49,280,492	23,537,368