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Stock-based Compensation - Total Stock-based Compensation Recognized (Details) - Options, TRSUs, PSUs and the ESPP - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Stock-based compensation expense: |  |
Stock-based compensation expense | $ 7,668 | $ 8,558
Research and development |  |
Stock-based compensation expense: |  |
Stock-based compensation expense | 2,716 | 2,921
General and administrative |  |
Stock-based compensation expense: |  |
Stock-based compensation expense | $ 4,952 | $ 5,637

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