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Balance Sheets Details - Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Schedule of Inventory Components    
Raw materials $ 108 $ 108
Work-in-process 0 91
Finished goods 2,197 1,830
Total Inventories 2,305 2,029
Inventory reserves $ 1,400 $ 1,400