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Accounts Receivable and Other Related Party Receivables, Net - Summary of Accounts Receivable (Detail) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total accounts receivable and other, net | $ 67,320 | $ 285,764
Related Party [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable, gross | 67,320 | 67,320
Other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Accounts receivable, gross | $ 0 | $ 218,444

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