Deferred Revenue - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Advances From Customers
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Current	$ 20,127	$ 17,749
PRC Government for Stockpiling of H5N1 and Hepatitis A Vaccines
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Current	$ 200	$ 206

Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer, classified as current.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 27
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479777/606-10-55-27

Name:	us-gaap_ContractWithCustomerRefundLiabilityCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant