v3.25.4
Stock-Based Compensation - Schedule of Issuance of Stock Option Awards to Employees and Nonemployees (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Total stock-based compensation $ 93 $ 534 $ 642 $ 2,695 $ 3,225 $ 2,980
Cost of Revenue [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Total stock-based compensation 4 3 5 38 41
Research and Development [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Total stock-based compensation 25 144 191 966 1,107 940
Sales, General and Administrative [Member]            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Total stock-based compensation $ 64 $ 387 $ 446 $ 1,691 $ 2,077 $ 2,040