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Inventory (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Dec. 31, 2021
Components of inventory      
Raw materials $ 289 $ 753 $ 646
Finished goods 1,340 718 646
Inventory, net $ 1,629 1,471 1,292
Reserve for excess inventory   $ 43 $ 97