Stock-based Compensation - Transactions Related to Stock Options Awarded to Employees and Directors (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Amount
Options outstanding at December 31, 2025	903,096
Granted	169,300
Exercised	(23,723)
Forfeited	(266)
Options outstanding at June 30, 2026	1,048,407	903,096
Options exercisable at June 30, 2026	1,048,407
Weighted average exercise price
Options outstanding at December 31, 2025	$ 11.99
Granted	11
Exercised	1.65
Forfeited	0
Options outstanding at June 30, 2026	11.98	$ 11.99
Options exercisable at June 30, 2026	$ 11.98
Weighted average remaining contractual life
Options outstanding	9 years 3 months 21 days	9 years 7 months 13 days
Granted	9 years 11 months 12 days
Options exercisable	9 years 3 months 21 days
Aggregate intrinsic value
Options outstanding, Beginning Balance	$ 893
Aggregate intrinsic value Granted	0
Aggregate intrinsic value Exercised	39
Aggregate intrinsic value Forfeited	238
Options outstanding Ending Balance	8,136	$ 893
Options exercisable	$ 8,136

Share Based Compensation Arrangement by Share Based Payment Award Options Forfeited in Period Intrinsic Value

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Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Granted Intrinsic Value

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Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value [Abstract]

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Sharebased Compensation Arrangement By Sharebased Payment Award Options Granted Weighted Average Remaining Contractual Term

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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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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.

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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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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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