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Income Taxes - Summary of Net Deferred Income Tax Liability (Detail) - USD ($) $ in Thousands | Mar. 31, 2025 | Mar. 31, 2024
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Components of Deferred Tax Assets and Liabilities [Abstract] |  |
Depreciation | $ (3,060) | $ (2,931)
Accrued compensation | 322 | 237
Goodwill | (1,007) | (607)
Prepaid pension asset | (1,278) | (1,399)
Accrued pension liability | 219 | 232
Accrued postretirement benefits | 61 | 68
Compensated absences | 641 | 531
Inventories | 645 | 2,541
Warranty liability | 171 | 182
Accrued expenses | 445 | 600
Equity-based compensation | 475 | 328
Allowance for doubtful accounts | 136 | 18
Operating lease assets | (1,460) | (1,694)
Operating lease liabilities | 1,557 | 1,784
Acquisition costs | 163 | 180
Intangible assets | 71 | 187
New York State investment tax credit | 1,048 | 1,030
Research and development cost | 3,612 | 2,771
Net operating loss carryforwards | 280 | 182
Capital loss carryforward | 0 | 4,211
Other | (515) | (238)
Deferred Tax Assets, gross | 2,526 | 8,213
Less: Valuation allowance | (1,048) | (5,241)
Total | $ 1,478 | $ 2,972

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