National Institutes of Health Contracts - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Feb. 01, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Health Contracts Relating To Research And Development [Line Items]
Grant Contract Lease Term	24 months
Grant Receipts Upon Milestone Achievement	$ 8,000
RADx grant proceeds offsetting cost of equipment		$ 1,250	$ 1,500	$ 0
Building and Building Improvements [Member]
Health Contracts Relating To Research And Development [Line Items]
RADx grant proceeds offsetting cost of equipment		$ 2,750
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