Inventories - Schedule of inventories (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 1,862	$ 1,862		$ 1,179
Work-in-process	1,096	1,096		1,141
Finished goods	953	953		665
Total inventories	3,911	3,911		$ 2,985
Inventory write-down	$ 400	$ 600	$ 400