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Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
Accrued Expenses      
Legal expenses $ 58 $ 5,195  
Offering costs 1,356 1,356  
Compensation and related benefits 17 369  
Warranty expenses (Note 8) 192 192 $ 195
Other accrued expenses 158 372  
Accrued expenses $ 1,781 $ 7,484