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Stockholders' Equity - Summary of Common Stock Reserved for Future Issuance (Details) - shares shares in Thousands	Dec. 31, 2024	Dec. 31, 2023
Stockholders' Equity Note [Abstract]
Stock options outstanding	26,082	24,575
Restricted stock units outstanding	1,981
Shares available for future grants under the Amended & Restated 2007 Equity Incentive Plan	12,125
Shares of common stock reserved under the Employee Stock Purchase Plan	921
Shares of common stock underlying warrants	298
Shares of common stock underlying convertible notes outstanding (see Note 8)	9,819
Total shares reserved for future issuance	51,226

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Aggregate number of convertible common shares reserved for future issuance.

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Common stock underlying warrants.

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Aggregate number of common shares reserved under employee stock purchase plan for future issuance.

+ References

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- Definition

Aggregate number of common shares reserved for future issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Section 50
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