Convertible Preferred Stock (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021
Class Of Stock [Line Items]
Preferred stock, par value		$ 0.0001	$ 0.0001
Preferred stock, shares authorized/designated		50,000,000	50,000,000
Series B Preferred Stock [Member]
Class Of Stock [Line Items]
Conversion Of Stock, Per Share	$ 8.00
Conversion Of Stock Amount Issued 1	$ 122.8
Conversion Of Stock Shares Issued 1	15,365,574
Convertible Preferred Shares [Member] | UNS [Member]
Class Of Stock [Line Items]
Conversion Of Stock, Per Share	$ 0.2191
Convertible Preferred Shares [Member] | COVAXX [Member]
Class Of Stock [Line Items]
Conversion Of Stock, Per Share	$ 3.4233