License Agreements - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Aug. 01, 2018
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Common stock, shares issued	39,778,530	39,778,530	39,429,103
NIH Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Payment of license fee		$ 100,000
Potential milestone payments		8,600
NIH Agreement | Research and Development Expense [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Payment of license fee	$ 0	0
U W Two Thousand And Eighteen Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Payment of license fee	300	300
Common stock, shares issued				192,276
Potential Payments for Future Development Regulatory and Sales Based Milestones		1,350
Total Milestone Payments		12,200
Uw Flu License Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Aggregate Payments Related To Cumulative Net Sales Thresholds		$ 6,400
License Agreement Expiry Year		2041
Uw Flu License Agreement | Research and Development Expense [Member]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Payment of license fee	$ 100	$ 100
U T Agreement
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Potential milestone payments		$ 4,600