National Institutes of Health Contracts - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Feb. 01, 2021	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Jan. 25, 2022	Sep. 30, 2021
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			$ 1,500
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		$ 200		$ 1,000
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