Stock Option Plan - Share-Based Compensation Expense on All Employee and Non-Employee Awards (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock based compensation expenses	$ 796	$ 435
Research and Development [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock based compensation expenses	210	17
General and Administrative [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock based compensation expenses	$ 586	$ 418

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details