Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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.

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+ Details

Revenue - Additional Information (Details) - USD ($)	12 Months Ended
Revenue - Additional Information (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2021	May 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 559,000	$ 43,258,000	$ 31,643,000
Upfront cash payment received	55,622,000	52,096,000	$ 81,572,000
Collaboration Agreement with AstraZeneca
Disaggregation of Revenue [Line Items]
Revenue	600,000	18,000,000
Upfront cash payment received					$ 40,000,000	$ 20,000,000
Milestone payments received	0	10,000,000
Collaboration Agreement with Hansoh
Disaggregation of Revenue [Line Items]
Revenue	0	24,600,000
Upfront cash payment received				$ 16,000,000
Upfront cash payments received, net of tax				$ 14,400,000
Milestone payments received	0	2,000,000
Royalty Income
Disaggregation of Revenue [Line Items]
Revenue	0	144,000
Research Collaboration Income
Disaggregation of Revenue [Line Items]
Revenue	$ 559,000	$ 43,114,000