Nature of the Business (Narrative) (Details) $ / shares in Units, $ in Thousands				3 Months Ended		6 Months Ended
	Nov. 18, 2021 $ / shares shares	Nov. 15, 2021 $ / shares shares	Oct. 29, 2021	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) shares	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) shares
Nature of Business Disclosures [Line Items]
Proceeds from issuance of simple agreement for future equity							$ 2,900
Proceeds from issuance of convertible notes payable with related parties							2,000
Repayment of convertible notes							2,000
Cash and cash equivalents				$ 109,066		$ 109,066		$ 144,885
Net Income Loss				(17,252)	$ (26,908)	(35,515)	(58,930)
Accumulated deficit				(264,996)		(264,996)		(229,481)
Reverse stock split	1.556		1.556
Restricted Cash Current				4,708		4,708		$ 172
Net Cash Provided By Used In Operating Activities						(30,051)	$ (45,952)
UB-612 [Member]
Nature of Business Disclosures [Line Items]
Restricted Cash Current				$ 4,600		$ 4,600
Class A Common Stock [Member]
Nature of Business Disclosures [Line Items]
Issuance of stock, shares | shares		6,000,000
Share Price | $ / shares		$ 13.00
Underwriters [Member]
Nature of Business Disclosures [Line Items]
Issuance of stock, shares | shares	900,000
Underwriters [Member] | Class A Common Stock [Member]
Nature of Business Disclosures [Line Items]
Issuance of stock, shares | shares	537,711
Share Price | $ / shares	$ 71.1
UNS. [Member]
Nature of Business Disclosures [Line Items]
Note conversion ratio						3.4233
Option exchange ratio				0.2191
COVAXX [Member]
Nature of Business Disclosures [Line Items]
ConvertiblePreferredStockSharesIssuedUponConversion | shares								3.4233
Debt Conversion Converted Instrument Shares Issued 1 | shares						4,047,344