Development and License Agreements - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2020	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
BARDA Agreement
Licenses Agreements [Line Items]
Additional committed fund receivable				$ 23,000,000
Committed fund receivable			$ 148,900,000
Committed fund receivable			245,900,000
BARDA Agreement | Cerus Corporation | Maximum
Licenses Agreements [Line Items]
Co-investment by the company			10,000,000
FDA Agreement
Licenses Agreements [Line Items]
Contract agreement term		5 years
Total potential contract value		$ 11,100,000
DoD and IBAS Program Agreement
Licenses Agreements [Line Items]
Contract agreement term	2 years
Total potential contract value	$ 9,100,000
Accounts Receivable | BARDA Agreement
Licenses Agreements [Line Items]
Receivable of billed and unbilled amounts			4,000,000.0		$ 4,700,000
Accounts Receivable | FDA Agreement
Licenses Agreements [Line Items]
Receivable of billed and unbilled amounts			200,000
Accounts Receivable | FDA Agreement | Maximum
Licenses Agreements [Line Items]
Receivable of billed and unbilled amounts					$ 200,000
Accounts Receivable | DoD and IBAS Program Agreement
Licenses Agreements [Line Items]
Receivable of billed and unbilled amounts			500,000
Other Current Assets | DoD and IBAS Program Agreement
Licenses Agreements [Line Items]
Receivable of billed and unbilled amounts			$ 100,000