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Income Taxes - Additional Information (Detail) - USD ($) |  |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 27, 2020 | Mar. 26, 2020 | Dec. 31, 2017 | Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2018
Income Taxes [Line Items] |  |  |  |  |  |
Valuation allowance |  |  |  | $ 5,319,000 | $ 4,917,000 |
Liability unrecognized tax benefits |  |  |  | $ 0 | 0 |
Percentage of business interest limitation | 50.00% | 30.00% |  |  |  |
Percentage of corporate income tax rate |  |  | 35.00% | 21.00% |  |
Income tax benefit from remeasurement of deferred tax assets and liabilities |  |  |  |  |  | $ 971,000
One-time transition tax on accumulated foreign earnings |  |  |  |  |  | $ 185,000
Tax related to global intangible low-taxed income |  |  |  | $ (1,000) | 11,000 |
Foreign derived intangible income (FDII) effective tax rate |  |  | 13.125% |  |  |
Incremental U.S. tax savings on foreign derived intangible income |  |  |  | 95,000 | 69,000 |
Investment Tax Credit Carryforward [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Deferred income taxes include the impact of state investment tax credits |  |  |  | 314,000 |  |
State investment tax credits with an unlimited carryforward period |  |  |  | 794,000 |  |
International Tax Jurisdictions [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Net operating loss |  |  |  | $ 301,000 |  |
International Tax Jurisdictions [Member] | India [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Open tax year |  |  |  | 2019 |  |
International Tax Jurisdictions [Member] | Earliest Tax Year [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Net operating loss, expiration date |  |  |  | Mar. 31, 2022 |  |
Open tax year |  |  |  | 2016 |  |
International Tax Jurisdictions [Member] | Latest Tax Year [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Net operating loss, expiration date |  |  |  | Mar. 31, 2024 |  |
Open tax year |  |  |  | 2019 |  |
International Tax Jurisdictions [Member] | Other Assets [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Deferred income tax asset |  |  |  | $ 48,000 | 37,000 |
State Tax Jurisdictions [Member] | Earliest Tax Year [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Open tax year |  |  |  | 2015 |  |
State Tax Jurisdictions [Member] | Latest Tax Year [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Open tax year |  |  |  | 2019 |  |
State Tax Jurisdictions [Member] | Assets Held for Sale [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Deferred income tax asset |  |  |  |  | 126,000 |
Net operating loss carryforwards, valuation allowance |  |  |  |  | $ 34,000 |
Federal Tax Jurisdictions [Member] | Earliest Tax Year [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Open tax year |  |  |  | 2016 |  |
Federal Tax Jurisdictions [Member] | Latest Tax Year [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Open tax year |  |  |  | 2019 |  |
Maximum [Member] | Investment Tax Credit Carryforward [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Expiration date of state investment tax credits |  |  |  | Mar. 31, 2034 |  |
Minimum [Member] | Investment Tax Credit Carryforward [Member] |  |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |  |
Expiration date of state investment tax credits |  |  |  | Mar. 31, 2021 |  |

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- Definition The amount of deferred income tax assets pertaining to state investment tax credits that have an unlimited carryforward period. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for foreign-derived intangible income. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to global intangible low-taxed income. + References No definition available. + Details
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