CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Revenue
Revenues		$ 219	$ 496
Costs and expenses
Cost of sales		5,509	8,332
Research and development expenses		13,983	11,755
General and administrative expenses		18,883	7,710
Grant expense (income), net		913	(469)
Total costs and expenses		39,288	27,328
Operating loss		(39,069)	(26,832)
Other income (expense)
Sale of state tax attributes		0	4,060
Interest income (expense), net		(115)	2
Interest expense – related party		(23,706)	(49,708)
Loss on extinguishment of convertible notes		0	(6,111)
Change in fair value, embedded derivative		2,092	(716)
Change in fair value, Sponsor Earnout Shares		(8,083)	0
Income (loss) from equity in unconsolidated joint venture		127	(178)
Net loss		$ (68,754)	$ (79,483)
Basic and diluted loss per share attributable to common shareholders
Basic (in usd per share)	[1]	$ (7.31)	$ (20.22)
Diluted (in usd per share)	[1]	$ (7.31)	$ (20.22)
Weighted average shares of Common Stock
Basic (in shares)	[2]	9,408,841	3,930,336
Diluted (in shares)	[2]	9,408,841	3,930,336

[1] See Note 1 for discussion of reverse capitalization given effect herein

[2] See Note 1 for discussion of reverse capitalization given effect herein