Summary of Significant Accounting Policies - Disaggregation of Total Revenue by Major Resource (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,952	$ 1,964	$ 4,013	$ 4,042
Product Instruments [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	180	550	644	872
Product Consumables [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,597	1,238	3,002	2,415
Instrument Rentals [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	43	49	106	104
Service [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	132	127	261	228
Total Product Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,952	$ 1,964	$ 4,013	3,619
Contribution Revenue [Member]
Disaggregation Of Revenue [Line Items]
Total revenue				$ 423