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Cash, restricted cash, cash equivalents, and available for sale investments.

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Effective date of warrant.

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Organization and summary of significant accounting policies.

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Resale of common stock issuable upon exercise of warrant.

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Sale of stock repurchased cash consideration.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

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Per share or per unit amount of equity securities issued.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Organization and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)				1 Months Ended			3 Months Ended		6 Months Ended
	May 28, 2024	Mar. 04, 2024	Feb. 12, 2024	Mar. 31, 2024	Jun. 30, 2023	Apr. 30, 2022	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Organization And Summary Of Significant Accounting Policies [Line Items]
Cash and investments in marketable securities							$ 290,640,000		$ 290,640,000		$ 329,441,000
Proceeds from issuance of pre-funded warrant									30,000,000	$ 0
Accounts receivable, credit loss expense (reversal)							$ 0	$ 0	$ 0	$ 0
Bristol Myers Squibb Company
Organization And Summary Of Significant Accounting Policies [Line Items]
Sale of stock repurchased cash consideration			$ 3,000,000
Sale of stock shares repurchased			8,300,000
Securities Purchase Agreement \| TCG Crossover Fund II, L.P.
Organization And Summary Of Significant Accounting Policies [Line Items]
Proceeds from issuance of pre-funded warrant		$ 30,000,000		$ 30,000,000
Effective date of warrant	Jun. 05, 2024
2020 Purchase and Sale Agreement
Organization And Summary Of Significant Accounting Policies [Line Items]
Amount exchanged to remove cap on royalties		$ 15,000,000
Pre-Funded Warrant \| Securities Purchase Agreement \| TCG Crossover Fund II, L.P.
Organization And Summary Of Significant Accounting Policies [Line Items]
Number of warrants issued to be purchase common shares		25,000,000		25,000,000
Shares issued, price per share		$ 1.2		$ 1.2
Pre-Funded Warrant \| Securities Purchase Agreement \| TCG Crossover Fund II, L.P. \| Maximum
Organization And Summary Of Significant Accounting Policies [Line Items]
Resale of common stock issuable upon exercise of warrant	25,000,000
Employee Severance \| 2022 Restructuring Plan
Organization And Summary Of Significant Accounting Policies [Line Items]
Workforce termination, percentage						70.00%
Employee Severance \| 2023 Restructuring Plan
Organization And Summary Of Significant Accounting Policies [Line Items]
Workforce termination, percentage					60.00%