Stock Plan - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Number of Options
Options Outstanding, Number of Options	11,990,688
Options granted, Number of Options	3,646,290
Options exercised, Number of Options	0
Options Outstanding, Number of Options	15,636,978	11,990,688
Vested and expected to vest, Number of Options	15,636,978
Exercisable, Number of Options	6,138,335
Weighted Average Exercise Price
Options Outstanding, Weighted Average Exercise Price	$ 2.43
Options granted, Weighted Average Exercise Price	1.53
Options exercised, Weighted Average Exercise Price	0
Options Outstanding, Weighted Average Exercise Price	2.22	$ 2.43
Vested and expected to vest, Weighted Average Exercise Price	2.22
Exercisable, Weighted Average Exercise Price	$ 3.35
Weighted-Average Remaining Contractual Life
Options Outstanding, Weighted-Average Remaining Contractual Life	8 years 21 days	7 years 8 months 26 days
Vested and expected to vest, Weighted-Average Remaining Contractual Life	8 years 21 days
Exercisable, Weighted-Average Remaining Contractual Life	6 years 5 months 26 days
Aggregate Intrinsic Value
Options Outstanding, Aggregate Intrinsic Value	$ 83	$ 86
Vested and expected to vest, Aggregate Intrinsic Value	83
Exercisable, Aggregate Intrinsic Value	$ 0

Share based compensation arrangement by share based payment award options intrinsic value.

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Share based compensation arrangement by share based payment award options weighted-average remaining life.

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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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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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 exercisable or convertible options. 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 price at which option holders acquired shares when converting their stock options into shares.

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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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Number of share options (or share units) exercised during the current period.

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