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Share-based Compensation - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Stock-based Compensation        
Share-based compensation expense $ 21 $ 33 $ 73 $ 80
Cost of goods sold [Member]        
Stock-based Compensation        
Share-based compensation expense 2 2 6 5
Sales and marketing [Member]        
Stock-based Compensation        
Share-based compensation expense 2 2 9 6
Research and product development [Member]        
Stock-based Compensation        
Share-based compensation expense 14 17 38 37
General and administrative [Member]        
Stock-based Compensation        
Share-based compensation expense $ 3 $ 12 $ 20 $ 32