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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