CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue:
Total revenue	$ 3,377	$ 3,982
Expenses:
Research and development	16,895	35,473
General and administrative	9,379	8,732
Total expenses	26,274	44,205
Loss from operations	(22,897)	(40,223)
Other income (expense):
Investment income	436	420
Interest expense	(3,403)	(3,403)
Other income (expense)		(12)
Net loss	$ (25,864)	$ (43,218)
Basic and diluted net loss per share	$ (0.58)	$ (2.11)
Basic and diluted weighted average number of common shares outstanding	44,421	20,442
Grant and other [Member]
Revenue:
Total revenue	$ 3,377	$ 3,982