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Income Taxes - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Operating Loss Carryforwards [Line Items] |  |
Unrecognized tax benefits | $ 0 |
Uncertain tax position netted against deferred tax asset | 1,600,000 | $ 1,500,000
Increase (decrease) in valuation allowance | 1,875,000 | $ 1,941,000
Federal net operating loss carryforwards | 210,500,000 |
State net operating loss carryforwards | $ 40,900,000 |
Federal net operating loss carryforwards (“NOLs”) expiring year | 2028 |
State net operating loss carryforwards (“NOLs”) expiring year | 2028 |
Federal research tax credit carryforwards expiration period | 2028 |
Accrued expense regarding interest or penalties | $ 0 |
Federal [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating loss carry forwards | 66,800,000 |
Research tax credit carryforwards | $ 4,700,000 |
Federal [Member] | Maximum [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Percentage of future taxable income to be offset | 80.00% |
State [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Research tax credit carryforwards | $ 4,300,000 |

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