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Income Taxes - Components of Income Tax Expense (Benefit) from Continuing Operations (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Mar. 31, 2018
Income Tax Disclosure [Abstract]      
Current $ 0 $ 0 $ 0
Deferred (3,195) (4,769) (5,922)
Valuation allowance 3,195 4,769 5,922
Income tax expense $ 0 $ 0 $ 0