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Basis of Presentation and Consolidation and Summary of Significant Accounting Policies - Prepaid expenses and other current assets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Accounting Policies [Abstract] |  |
Prepaid expenses | $ 566 | $ 533
Stock subscription receivable | 1,362 | 0
Other current assets | 189 | 226
Prepaid expenses and other current assets | $ 2,117 | $ 759

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