Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended		12 Months Ended
	Apr. 28, 2018 USD ($)	Jan. 28, 2017 USD ($)	Apr. 27, 2019 USD ($) reporting_unit Segment	Apr. 28, 2018 USD ($)	Apr. 29, 2017 USD ($)
Accounting Policies [Abstract]
Number of reportable segments | Segment			3
Maturity period of maximum (in days)			90 days
Property, Plant and Equipment [Line Items]
Number of reporting units | reporting_unit			2
Goodwill impairment	$ 0
Asset impairment charges		$ 36,312,000	$ 0	$ 36,312,000	$ 0
Contract liabilities	26,166,000		22,004,000	26,166,000
Contract liability, revenue recognized			$ 25,764,000
Liability for percentage of maximum potential amount that could be redeemed			98.50%
Deferred direct-marketing expenses included in prepaid and other current assets	$ 0			0
The income tax expense (benefit) related to cash flow hedge losses			$ 620,000	$ 938,000	$ 1,057,000
Building
Property, Plant and Equipment [Line Items]
Estimated useful lives			39 years
Computer Hardware And Software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives			3 years
Computer Hardware And Software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives			10 years
Office Furniture And Equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives			5 years
Office Furniture And Equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives			10 years