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Composition of Certain Financial Statement Captions - Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts Payable and Accrued Expenses [Abstract] |  |
Accounts payable | $ 9,474 | $ 4,758
Accrued payroll and bonus | 920 | 987
Accrued professional fees | 236 | 128
Accrued vacation and compensation | 356 | 370
Accrued R&D studies | 185 | 388
Accrued interest | 117 |
Accounts payable and accrued expenses, Total | $ 11,288 | $ 6,631

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