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Leases - Additional Information (Details)			3 Months Ended		6 Months Ended
	Nov. 17, 2021 ft²	Nov. 23, 2020 USD ($) ft²	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)	Dec. 17, 2021 USD ($)
Operating Lease [Line Items]
Operating lease, liability			$ 1,173,000		$ 1,173,000			$ 2,300,000
Operating lease right-of-use assets			1,086,000		1,086,000		$ 1,299,000	$ 2,300,000
Variable lease expense			22,000	$ 9,000	23,000	$ 75,000
Rent expense			126,000	126,000	252,000	252,000
Operating cash flows from operating leases			$ 130,000	$ 126,000	$ 260,000	$ 252,000
San Diego Permanent Lease [Member]
Operating Lease [Line Items]
Lab and Office space under lease agreement | ft²	2,892	8,051
Lease term		62 months
Monthly rental payments		$ 40,800
Base rent escalators		3.00%

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Lab and office space area under lease agreement.

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Operating lease.

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Operating leases monthly rent expense.

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Discount rate used by lessee to determine present value of operating lease payments.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Amount of lessee's right to use underlying asset under operating lease.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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