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Supplementary Balance Sheet Information - Depreciation Expense for Property and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Property, Plant and Equipment [Abstract]        
Total depreciation expense $ 89 $ 101 $ 276 $ 308