Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating expenses:
Research and development	$ 3,154	$ 3,670	$ 10,763	$ 10,498
General and administrative	2,700	5,291	7,500	9,364
In-process R&D	0	0	50,618	0
Total operating expenses	5,854	8,961	68,881	19,862
Loss from operations	(5,854)	(8,961)	(68,881)	(19,862)
Other expense, net	(121)	(189)	(306)	(1,215)
Loss before income tax expense	(5,975)	(9,150)	(69,187)	(21,077)
Income tax expense	0	0	(13)	(32)
Net loss	$ (5,975)	$ (9,150)	$ (69,200)	$ (21,109)
Net loss per share - basic and diluted	$ (0.10)	$ (0.18)	$ (1.26)	$ (0.88)
Basic and diluted weighted average shares outstanding	61,694	50,940	55,003	23,968