Equity (Details) $ / shares in Units, $ in Thousands, shares in Millions, dose in Millions			1 Months Ended				12 Months Ended
	Mar. 18, 2021 USD ($)	Mar. 01, 2021 dose $ / shares shares	Jun. 30, 2022 USD ($)	Feb. 28, 2022 USD ($) $ / shares shares	Apr. 30, 2021 USD ($) $ / shares shares	Feb. 28, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) dose $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold (in shares) | shares							4.5
Proceeds from sale of stock							$ 5,600
Commissions, fees and expenses							$ 200
Convertible preferred stock, par value (in USD per share) | $ / shares							$ 0.01	$ 0.01
Series B Convertible Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Preferred stock, outstanding							$ 4,100	$ 5,000
Series B Convertible Preferred Stock | Level 3 | Measurement Input, Discount Rate
Subsidiary, Sale of Stock [Line Items]
Preferred stock, measurement input								0.15
ATMs
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold (in shares) | shares							4.7	1.0
Aggregate gross number of shares that may be issued in transaction, value			$ 160,000
Proceeds from sale of stock							$ 7,900	$ 4,800
Commissions, fees and expenses							$ 400	$ 100
Public Offering Of Common Stock
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold (in shares) | shares				16.0
Proceeds from sale of stock				$ 49,800
Price per share (in USD per share) | $ / shares				$ 3.13
Registered Direct Offering
Subsidiary, Sale of Stock [Line Items]
Number of shares issued and sold (in shares) | shares					10.0	3.0
Proceeds from sale of stock					$ 93,400	$ 21,200
Commissions, fees and expenses					$ 6,600	$ 1,700
Price per share (in USD per share) | $ / shares					$ 10.00	$ 7.65
COVAXIN Preferred Stock Purchase Agreement | Series B Convertible Preferred Stock
Subsidiary, Sale of Stock [Line Items]
Number of shares agreed to issue and sell (in shares) | shares		0.1
Convertible preferred stock, par value (in USD per share) | $ / shares		$ 0.01
Price per share ( in USD per share) | $ / shares		$ 109.60
Advance payment amount	$ 6,000
Preferred stock, convertible, conversion ratio		10
Supply agreement, number of doses | dose		10.0					10.0