Summary of Significant Accounting Policies - Additional Disclosures (Details) $ in Thousands	12 Months Ended
Mar. 28, 2020 USD ($) item	Mar. 30, 2019 USD ($) item	Mar. 31, 2018 USD ($) item
Advertising Costs
Prepaid advertising	$ 239	$ 413
Advertising expense	28,000	27,700	$ 25,500
Income Taxes
Accrued interest and penalties	0	$ 0
Fair Value of Certain Financial Assets and Liabilities
Financial assets requiring fair value measurements on a recurring basis	0
Financial liabilities requiring fair value measurements on a recurring basis	$ 0
Supplier Concentration Risk \| Sales Revenue
Supplier Concentration Risk
Number of largest suppliers \| item	3	3	3
Concentration risk percentage	36.00%	39.00%	40.00%

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Represents the financial liabilities requiring fair value measurements on a recurring basis.

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Represents the number of largest suppliers.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of consideration paid in advance for advertising that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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