Additions made to capitalized computer software costs during the period.

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Amount of expense for amortization of capitalized computer software costs.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Internal-use Software and Website Development Costs - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 26, 2019	Jan. 27, 2018	Jan. 26, 2019	Jan. 27, 2018
Software and Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Useful Life			3 years
Capitalized software costs			$ 9,604	$ 12,843
Capitalized Computer Software, Amortization	$ 5,695	$ 5,543	$ 17,382	$ 16,388
Website Development Costs
Finite-Lived Intangible Assets [Line Items]
Useful Life			7 years