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Income Taxes - Income Tax (Provision) for Federal Statutory Corporate Income Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Income Taxes    
Tax benefit (provision) at federal statutory rate $ 1,844 $ 26
State income tax benefit (provision), net of federal benefit 326 (10)
Research and development tax credits 53 66
Foreign earnings or losses taxed at different rates (59) (72)
Tax rate change (54) (58)
Other (119) (58)
Change in valuation allowance (2,146) (328)
Tax benefit (provision) $ (155) $ (434)