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Inventories - Narrative (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 25, 2020 | Dec. 27, 2019 | Dec. 25, 2020 | Dec. 27, 2019 | Mar. 27, 2020 | Mar. 29, 2019
Inventory [Line Items] |  |  |  |  |  |
Recorded inventory provisions | $ 885 | $ 1,008 | $ 2,958 | $ 2,538 | $ 3,345 | $ 3,660
Voxtel |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Inventory acquired, step up basis | $ 3,120 |  | $ 1,245 |  |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314 + Details
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- Details
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