National Institutes of Health Contracts - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Feb. 01, 2021	Dec. 31, 2021	Dec. 31, 2020	Jan. 25, 2022	Sep. 30, 2021
Health Contracts Relating To Research And Development [Line Items]
Grant Contract Lease Term	12 months
Grant receipts upon milestone achievement	$ 5,500
RADx grant proceeds offsetting cost of equipment		$ 1,500
Subsequent Event [Member]
Health Contracts Relating To Research And Development [Line Items]
Grant receipts upon milestone achievement				$ 2,500
Maximum [Member] | Subsequent Event [Member]
Health Contracts Relating To Research And Development [Line Items]
Grant receipts upon milestone achievement				$ 8,000
National Institute Of Health [Member] | Other Income Expense [Member]
Health Contracts Relating To Research And Development [Line Items]
Proceeds from reimbursement of research and development expenditure			$ 800
National Institute Of Health [Member] | Reimbursement Of Research And Development Expenditure Accrued [Member]
Health Contracts Relating To Research And Development [Line Items]
Reimbursement of research and development expenditure					$ 1,000