Supplemental Balance Sheet Information - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Supplemental Balance Sheet Information [Line Items]
Raw materials and work-in-process inventory	$ 1,400,000	$ 300,000
Depreciation and amortization	1,270,000	1,710,000
Other accrued expenses	869,000	620,000
Transition Agreement [Member]
Supplemental Balance Sheet Information [Line Items]
Other accrued expenses	$ 0	200,000
T2 Owned Instruments in Service [Member]
Supplemental Balance Sheet Information [Line Items]
Estimated useful lives (in years)	5 years
T2 Owned Instruments in Service [Member] | Product [Member]
Supplemental Balance Sheet Information [Line Items]
Depreciation expense recorded as a component of cost of product revenue	$ 200,000	300,000
T2-Owned Instruments and Components [Member]
Supplemental Balance Sheet Information [Line Items]
Estimated useful lives (in years)	5 years
T2-Owned Instruments and Components [Member] | COVID-19 [Member]
Supplemental Balance Sheet Information [Line Items]
Decrease in carrying value of property and equipment		$ 600,000