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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 13, 2024 | May 08, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Cash and cash equivalents |  |  | $ 3,174,000 | $ 3,174,000 | $ 3,174,000 | $ 7,617,000 | $ 2,901,000
Restricted cash |  |  | 143,000 | 143,000 | 143,000 | 143,000 | 143,000
Accumulated deficit |  |  | $ (345,562,000) | $ (345,562,000) | (345,562,000) |  | $ (339,669,000)
Cash flow from operations |  |  |  |  | $ 5,625,000 | 8,460,000 |
Issuance of common stock |  |  | 15,365,825 | 15,365,825 | 15,365,825 |  | 10,077,726
Inventory reserve |  |  | $ 200,000 | $ 200,000 | $ 200,000 |  |
Dilutive effect |  |  |  |  | $ 0 | $ 0 |
Common stock equivalents excluded from computing diluted net loss per share |  |  |  |  | 11,300,000 | 1,000,000 |
Minimum percentage of income tax payment net of refunds received |  |  |  |  | 5.00% |  |
Insurance Premium Financing Liability [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Insurance premium financing agreement description |  |  |  |  | In September 2024, the Company entered into an insurance premium financing agreement for $0.4 million, with a term of nine months and an annual interest rate of 8.57%. The Company made a down payment of 10% and is required to make monthly principal and interest payments of $44,281 over the term of the agreement, which matures in June 2025. |  |
Financing agreement amount |  |  | $ 400,000 | 400,000 | $ 400,000 |  |
Term |  |  | 9 months |  |  |  |
Annual interest rate |  |  | 8.57% |  |  |  |
Percentage of down payment |  |  | 10.00% |  |  |  |
Monthly principal and interest payments |  |  | $ 44,281 |  |  |  |
Prepaid insurance included in prepaid expenses and other current assets |  |  | 400,000 | 400,000 | 400,000 |  |
Mosaic |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Inventory finished goods, net of reserve |  |  | $ 600,000 | $ 600,000 | $ 600,000 |  | $ 300,000
Common Warrants [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Issuance of common stock |  | 5,000,000 |  |  |  |  |
Issuance of warrants |  | 1,562,500 |  |  |  |  |
Stock offering price per share |  | $ 0.8 |  |  |  |  |
Pre-Funded Warrants [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Stock offering price per share |  | $ 0.799 |  |  |  |  |
At-The-Market Facility [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Issuance of common stock |  |  | 1,352,600 | 1,352,600 | 1,352,600 |  |
Issuance of common stock |  |  |  | 0 | 1,352,600 |  |
Net proceeds from issuance of offerings |  |  |  |  | $ 1,700,000 |  |
Public Offering [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Initial offering date |  | May 8, 2024 |  |  |  |  |
Issuance of common stock |  | 1,562,500 |  |  |  |  |
Net proceeds from issuance of offerings | $ 4,500,000 |  |  |  |  |  |
Public Offering [Member] | Common Warrants [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Issuance of common stock |  | 5,000,000 |  |  |  |  |
Public Offering [Member] | Common Warrants [Member] | Maximum [Member] |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Issuance of warrants |  | 5,000,000 |  |  |  |  |

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