Revenue From Contracts With Customers - Summary of Product and Service Revenue Disaggregated by Geographic Region (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Product and service revenue	$ 29,443	$ 29,493
United States
Disaggregation Of Revenue [Line Items]
Product and service revenue	18,776	15,004
South Korea
Disaggregation Of Revenue [Line Items]
Product and service revenue	2,180	4,380
Europe
Disaggregation Of Revenue [Line Items]
Product and service revenue	4,409	5,805
Asia (Excluding South Korea)
Disaggregation Of Revenue [Line Items]
Product and service revenue	3,576	3,855
Other
Disaggregation Of Revenue [Line Items]
Product and service revenue	$ 502	$ 449