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Selected Balance Sheet Information - Schedule of Accrued employee benefits (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Selected Balance Sheet Information    
Accrued bonus expense $ 448 $ 870
Accrued compensation expense 201 187
Accrued vacation expense 110 87
Total accrued employee benefits $ 759 $ 1,144