Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Income Tax Contingency [Line Items]
Valuation allowance		$ 150,047	$ 78,071
Impact on effective tax rate		105,200
Accrued interest or penalties associated with uncertain tax positions		1,100	1,200
Accrued interest and penalties			2,000
Deferred Tax Asset Valuation Allowance [Member]
Income Tax Contingency [Line Items]
Valuation allowance	$ 69,000	71,976	$ 5,119	$ 4,455
United States [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards		$ 118,100
Operating loss carryforwards expiration beginning year		2029
Research and development expenditures, amortization period		5 years
Tax years subject to examination		2020 and thereafter
United States [Member] | Research & Development [Member]
Income Tax Contingency [Line Items]
Tax credit carryforward amount		$ 79,900
United States [Member] | Research & Development [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Tax credit carryforwards expiration beginning year		2040
State [Member]
Income Tax Contingency [Line Items]
Operating loss carryforwards		$ 188,200
Operating loss carryforwards expiration beginning year		2024
Tax years subject to examination		2020 and thereafter
State [Member] | Research & Development [Member]
Income Tax Contingency [Line Items]
Tax credit carryforward amount		$ 185,100
State [Member] | Research & Development [Member] | Earliest Tax Year [Member]
Income Tax Contingency [Line Items]
Tax credit carryforwards expiration beginning year		2025
Foreign [Member]
Income Tax Contingency [Line Items]
Research and development expenditures, amortization period		15 years
Tax years subject to examination		2019 and thereafter