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Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Reserve for Doubtful Accounts Receivable [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | $ 87 | $ 29 | $ 33
Charged to Costs and Expenses | 1,765 | 163 | (4)
Charged to Other Accounts | 0 | 21 |
Deductions | (11) | (126) |
Balance at End of Period | 1,841 | 87 | 29
Accrued expenses |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | 760 |  |
Charged to Costs and Expenses | 0 | 1,073 |
Charged to Other Accounts | 0 |  |
Deductions | (760) | (313) |
Balance at End of Period | 0 | 760 |
Product Warranty Liability [Member] |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at Beginning of Period | 441 | 626 | 359
Charged to Costs and Expenses | 364 | 386 | 344
Charged to Other Accounts | 0 | 169 |
Deductions | (227) | (740) | (77)
Balance at End of Period | $ 578 | $ 441 | $ 626

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