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Government Grants - Grant receivable, which is included in Receivables (Detail) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Government Assistance, Asset [Abstract] |  |
Government grants receivable | $ 1,915,015 | $ 2,489,421
Government Assistance, Asset, Current, Statement of Financial Position [Extensible Enumeration] | Accounts Receivable, after Allowance for Credit Loss, Current | Accounts Receivable, after Allowance for Credit Loss, Current
DPA |  |
Government Assistance, Asset [Abstract] |  |
Government grants receivable |  | $ 2,382,594
DOTC |  |
Government Assistance, Asset [Abstract] |  |
Government grants receivable | $ 1,915,015 | $ 106,827

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