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Income Taxes - Tax Credit Carryforwards (Details) - Research Tax Credit Carryforward - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
UNITED STATES    
Tax Credit Carryforward [Line Items]    
Tax credit carryforward, amount $ 7.2 $ 4.5
MASSACHUSETTS    
Tax Credit Carryforward [Line Items]    
Tax credit carryforward, amount $ 3.5 $ 2.1