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Basis of Presentation and Business - Additional information (Detail) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 26, 2020 USD ($) Center | Dec. 26, 2020 USD ($) Facility Center | Mar. 29, 2020 USD ($) | Mar. 28, 2020 USD ($)
Organization And Business Operations [Line Items] |  |  |  |
Decreased in retained earnings | $ (50,720,000) | $ (50,720,000) |  | $ 48,000
Trade accounts receivable, net | 41,325,000 | 41,325,000 |  | 45,733,000
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |
Organization And Business Operations [Line Items] |  |  |  |
Increase in allowance for credit losses |  |  | $ 200,000 |
Decreased in retained earnings |  |  | $ 200,000 |
Trade accounts receivable, net | 500,000 | 500,000 |  | 400,000
Other notes receivable net of reserves | 400,000 | 400,000 |  | $ 500,000
COVID-19 |  |  |  |
Organization And Business Operations [Line Items] |  |  |  |
CARES act and other state level programs subsidies recognized | 200,000 | 800,000 |  |
Deferred payroll taxes paid |  | 11,600,000 |  |
CEWS payroll subsidies recognized | $ 0 | $ 6,200,000 |  |
U.S [Member] |  |  |  |
Organization And Business Operations [Line Items] |  |  |  |
Number of manufacturing facilities | Facility |  | 33 |  |
Number of sales centers | Center | 18 | 18 |  |
Canada [Member] |  |  |  |
Organization And Business Operations [Line Items] |  |  |  |
Number of manufacturing facilities | Facility |  | 5 |  |

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