Development and License Agreements - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2020	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2021
BARDA Agreement
Licenses Agreements [Line Items]
Additional committed fund receivable				$ 9,600,000
Committed fund receivable		$ 126,500,000
Committed fund receivable		223,500,000
Accounts receivable of billed and unbilled amounts		4,600,000	$ 4,700,000
BARDA Agreement | Cerus Corporation | Maximum
Licenses Agreements [Line Items]
Co-investment by the company		9,600,000
FDA Agreement
Licenses Agreements [Line Items]
Accounts receivable of billed and unbilled amounts		$ 300,000	$ 200,000
Contract agreement term	5 years
Total potential contract value	$ 11,100,000