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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