Share-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation
Share-based compensation expense	$ 21	$ 22	$ 44	$ 48
Cost of goods sold [Member]
Share-based Compensation
Share-based compensation expense	1	2	1	3
Sales and marketing [Member]
Share-based Compensation
Share-based compensation expense	(1)	2	0	4
Research and product development [Member]
Share-based Compensation
Share-based compensation expense	3	12	7	25
General and administrative [Member]
Share-based Compensation
Share-based compensation expense	$ 18	$ 6	$ 36	$ 16