Credit Facility (Details) - USD ($)	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Line of Credit Facility [Line Items]
Line of Credit Facility, Covenant Compliance	On March 2, 2020, we were granted a waiver to the condition to the current draw under the FILO Facility that Consolidated EBITDA (as defined in the Credit Agreement) minus Restricted Payments (as defined in the Credit Agreement) equal at least $90,000.
Long-term Line of Credit, Noncurrent	$ 99,700,000	$ 33,500,000
Short-term Debt	75,000,000	100,000,000
Proceeds from borrowings on Credit Facility	600,900,000	521,200,000	$ 674,500,000
Repayments of borrowings on Credit Facility	559,700,000	584,100,000	$ 637,700,000
Line of Credit Facility, Fair Value of Amount Outstanding	175,000	133,500,000
Letters of Credit Outstanding, Amount	$ 4,759,000	4,759,000
Debt Issuance Costs, Gross		3,395,000
Write off of Deferred Debt Issuance Cost		118,000
New Credit Facility
Line of Credit Facility [Line Items]
Credit facility maturity term, in years	5 years
Credit facility, borrowing capacity	$ 400,000,000
Line Of Credit Potential Increase Amount	$ 100,000,000
Long-term Line of Credit, Noncurrent		33,500,000
Line of Credit Facility, Interest Rate Description	Interest under the Credit Facility accrues, at our election, at a LIBOR or alternate base rate, plus, in each case, an applicable interest rate margin, which is determined by reference to the level of excess availability under the Credit Facility. Loans will initially bear interest at LIBOR plus 1.750% per annum, in the case of LIBOR borrowings, or at the alternate base rate plus 0.750% per annum, in the alternative, and thereafter the interest rate will fluctuate between LIBOR plus 1.750% per annum and LIBOR plus 1.250% per annum (or between the alternate base rate plus 0.750% per annum and the alternate base rate plus 0.250% per annum), based upon the excess availability under the Credit Facility at such time.
New Credit Facility [Member] [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	$ 100,000,000
Short-term Debt		$ 100,000,000
Line of Credit Facility, Interest Rate Description	Loans under the FILO Facility will bear interest at a rate equal to the LIBOR rate, plus 2.750%. In connection with the waiver, the applicable margin for credit extensions made under the FILO Facility after March 2, 2020 through the end of 2020 was increased by 0.50% (to 3.25% per annum for LIBO rate loans and 2.25% for base rate loans). The FILO Facility will be available solely during the draw period each year, from April 1 through July 31. We are required to borrow 100% of the aggregate commitments under the FILO Facility on April 1 of each year, and the loans must be repaid in full (including interest and fees) on July 31 of each year. The commitments under the FILO Facility will decrease from $75 million to $50 million on August 1, 2020 and from $50 million to $25 million on August 1, 2021. We will pay a commitment fee of 0.375% on the daily unused portion of the FILO Facility.
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, borrowing capacity	$ 500,000,000