CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED)
Government contracts revenue	$ 2,470	$ 0
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Operating expenses:
Research and development	$ 4,993	$ 1,784
General and administrative	4,920	2,398
Goodwill and intangible assets impairment	11,071
Restructuring and other costs	1,300
Acquisition-related costs	794
Total operating expenses	23,078	4,182
Loss from operations	(20,608)	(4,182)
Other income (expense):
Interest income (expense), net	(185)	3
Warrant revaluation loss	(874)
Series X preferred stock liability loss	(500)
Foreign currency exchange and other gain (loss), net	27	1
Loss before income tax benefit	(22,140)	(4,178)
Income tax benefit	273	0
Net loss	$ (21,867)	$ (4,178)
Net loss per share applicable to common stockholders
- Basic	$ (2.94)	$ (1.34)
- Diluted	$ (2.94)	$ (1.34)
Weighted-average number of common shares used in computing net loss per share applicable to common stockholders
- Basic	7,448,799	3,111,354
- Diluted	7,448,799	3,111,354
Comprehensive loss:
Net loss	$ (21,867)	$ (4,178)
Other comprehensive income (loss), net of tax:
Foreign currency translation	(2)
Total other comprehensive (loss) income, net of tax	(2)
Total comprehensive loss	$ (21,869)	$ (4,178)