Significant Accounting Policies - Schedule of Collaborative Revenues Under Collaboration Agreement (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenues	$ 20,920	$ 1,920
Collaborative Arrangements
Disaggregation Of Revenue [Line Items]
Revenues	834	854
EUSA
Disaggregation Of Revenue [Line Items]
Revenues	800	900
EUSA \| Collaborative Arrangements
Disaggregation Of Revenue [Line Items]
Revenues	$ 834	$ 854

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details