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Trade Accounts Receivable, Net - Summary of Trade Accounts Receivable, Net (Detail) - USD ($) $ in Thousands | Dec. 25, 2020 | Mar. 27, 2020 | Dec. 27, 2019 | Mar. 29, 2019 | Mar. 29, 2018
--- | --- | --- | --- | --- | ---
Receivables [Abstract] |  |  |  |  |
Trade accounts receivable | $ 103,687 | $ 107,223 |  | $ 101,343 |
Less: |  |  |  |  |
Allowance for doubtful accounts | (138) | (288) | $ (237) | (412) | $ (303)
Returns and sales allowances | (16,437) | (17,185) |  | (17,608) |
Related party trade accounts receivable | (19,778) | (30,293) |  | (6,879) |
Total | $ 67,334 | $ 59,457 |  | $ 76,444 |

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