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Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Payables and Accruals [Abstract] |  |  |
Accounts Payable, Trade, Current |  | $ 703 | $ 485
Payroll and benefits |  | 962 | 1,119
Royalty fees due to unrelated parties |  | 5 | 4
Audit and tax fees |  | 225 | 218
Legal |  | 41 | 40
Other |  | 172 | 44
Total accounts payable and accrued expenses | $ 1,895 | $ 2,108 | $ 1,910

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