Inventories - Continuity of Obsolescence Reserve from Continuing Operations for Inventory (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Mar. 28, 2020 |
Mar. 30, 2019 |
Mar. 31, 2018 |
|
| Inventory Disclosure [Abstract] | |||
| Beginning balance | $ 1,895 | $ 1,919 | $ 1,781 |
| Additional charges | 342 | 647 | 763 |
| Deductions | (390) | (671) | (625) |
| Ending balance | $ 1,847 | $ 1,895 | $ 1,919 |