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Share-Based Compensation - Schedule of Recorded Stock-Based Compensation Expense (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
Schedule of Recorded Stock-Based Compensation Expense [Line Items]            
Total stock-based compensation $ 286 $ 415 $ 1,158 $ 1,531 $ 1,927 $ 2,305
Research and Development [Member]            
Schedule of Recorded Stock-Based Compensation Expense [Line Items]            
Total stock-based compensation 4 11 22 62 72 118
General and Administrative [Member]            
Schedule of Recorded Stock-Based Compensation Expense [Line Items]            
Total stock-based compensation $ 282 $ 404 $ 1,136 $ 1,469 $ 1,855 $ 2,187