Additions made to capitalized computer software costs during the period.

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For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Internal-use Software and Website Development Costs - Additional Information (Detail) - Internal Use Software Development - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 30, 2016	Jan. 31, 2015	Jan. 30, 2016	Jan. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Capitalized costs			$ 24,158	$ 25,946
Amortization of capitalized amounts	$ 7,584	$ 6,928	$ 22,826	$ 20,902
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life			3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life			7 years