Fair Value Measurements and Financial Instruments - Summary of Assumptions to Fair Value of Warrant Liability Based on Black-Scholes Option Pricing Model (Detail)	Sep. 30, 2025 $ / shares	Dec. 31, 2024 $ / shares
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants share price per share	$ 7.46	$ 12.1
Warrants exercise price per share	$ 4,915	$ 4,915
Term (years)	8 years 29 days	8 years 9 months 29 days
Risk-Free Interest
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input	3.93	4.54
Expected Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and rights outstanding, measurement input	83	83