Stock-based Compensation - Summary of Option Activity under the 2026 Plan, 2020 Plan and the 2024 Inducement Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Share-Based Payment Arrangement [Abstract]
Shares, Beginning Balance	1,204,829
Shares, Granted	4,583,364
Shares, Forfeited/expired	(2,090)
Shares, Ending Balance	5,786,103	1,204,829
Shares, Expected to vest	4,964,270
Shares, Options exercisable	821,833
Weighted-Average Exercise price per Share, Beginning Balance	$ 37.44
Weighted-Average Exercise price per Share, Granted	9.43
Weighted-Average Exercise price per Share, Forfeited/expired	3.13
Weighted-Average Exercise price per Share, Ending Balance	15.27	$ 37.44
Weighted-Average Exercise price per Share, Expected to vest	9.39
Weighted-Average Exercise price per Share, Options exercisable	$ 50.80
Weighted-Average Remaining Contractual Term (in years)	9 years 4 months 2 days	8 years 1 month 20 days
Weighted-Average Remaining Contractual Term, Expected to vest (in years)	9 years 8 months 8 days
Weighted-Average Remaining Contractual Term, Options exercisable (in years)	7 years 3 months
Aggregate Intrinsic Value, Outstanding Balance	$ 3,388	$ 2,030
Aggregate Intrinsic Value, Expected to vest	2,731
Aggregate Intrinsic Value, Options exercisable	$ 656

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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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
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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