Subsequent Events (Additional Information) (Details) $ / shares in Units, $ in Millions		1 Months Ended
	May 03, 2022 USD ($) Employee	Jun. 30, 2021 $ / shares shares	Feb. 28, 2021 shares	Dec. 31, 2021 Employee
Pfizer Inc Member
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues | shares			2,362,348
Pfizer Purchase Agreement [Member] | Pfizer Inc Member
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues | shares		2,362,348
Shares Issued, Price Per Share | $ / shares		$ 16.93
HBr program [Member]
Subsequent Event [Line Items]
Number Of Employees Before Restructuring Initiative | Employee				146
Number Of Employees After Restructuring Initiative | Employee	35
HBr program [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Severance pay and other related termination benefits | $	$ 8.0