Income Taxes - Summary of Net Deferred Income Tax Liability (Detail) - USD ($) $ in Thousands	Mar. 31, 2026	Mar. 31, 2025
Components of Deferred Tax Assets and Liabilities [Abstract]
Depreciation	$ (4,796)	$ (3,060)
Accrued compensation	377	322
Goodwill	(1,460)	(1,007)
Prepaid pension asset	(1,461)	(1,278)
Compensated absences	695	641
Inventories	669	645
Warranty liability	188	171
Accrued expenses	627	445
Equity-based compensation	633	475
Operating lease assets	(1,574)	(1,460)
Operating lease liabilities	1,686	1,557
Acquisition costs	0	163
Intangible assets	407	71
New York State investment tax credit	1,086	1,048
Research and development cost	179	3,612
Research and development credit carryforward	479	0
Net operating loss carryforwards	2,697	280
Other	(112)	(99)
Deferred Tax Assets, gross	320	2,526
Less: Valuation allowance	(1,086)	(1,048)
Net		1,478
Net	(766)
Noncurrent deferred income tax assets	131	1,502
Noncurrent deferred income tax liabilities	$ (897)	$ (24)

Amount of deferred tax liability attributable to taxable temporary differences from prepaid pension asset.

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Amount before allocation of valuation allowances of deferred tax asset (liability) attributable to deductible (taxable) temporary differences from inventory.

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Amount of deferred tax liability attributable to taxable temporary differences from operating lease assets.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee benefits and Long Term Incentive Plan.

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Deferred Tax Assets Tax Deferred Expense Research And development Tax credit

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state investment tax credit carryforwards.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensated absences (includes, but not limited to, sick and personal days).

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from warranty reserves.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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The amount as of the balance sheet date of the estimated future tax effects attributable to policy acquisition costs being expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes.

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Amount of deferred tax liability attributable to taxable temporary differences from goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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