Summary of Significant Accounting Policies - Schedule of assets measured at fair value on a recurring basis (Detail) - USD ($)	Sep. 30, 2026	Dec. 31, 2025	Dec. 31, 2024
Money Market Funds [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account		$ 0
Level 1 [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account	$ 29,722,000	15,367,000
Level 1 [Member] \| Money Market Funds [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account	29,722,000	15,366,611	$ 24,498,933
Level 2 [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account	0	0
Level 2 [Member] \| Money Market Funds [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account	0	0	0
Level 3 [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account	0	0
Level 3 [Member] \| Money Market Funds [Member]
Fair Value Assets Measured On Recurring Basis [Line Items]
Money market account	$ 0	$ 0	$ 0