Segment Reporting Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2020 USD ($) Store	Oct. 26, 2019 USD ($)	Oct. 31, 2020 USD ($) Store segment	Oct. 26, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment			3
Number of Stores | Store	1,439		1,439
Revenues	$ 595,485	$ 772,228	$ 799,499	$ 1,091,885
Gross Profit	115,285	186,950	146,147	258,607
Depreciation and amortization expense	13,193	15,546	27,256	31,425
Operating Income (Loss)	6,733	56,431	(52,182)	12,619
Interest expense, net	912	1,446	3,565	3,978
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	5,821	54,985	(55,747)	8,641
Retail Segment [Member]
Segment Reporting Information [Line Items]
Revenues	576,514	741,769	735,290	1,016,425
Gross Profit	95,512	160,940	111,647	223,079
Depreciation and amortization expense	9,985	11,696	20,555	23,673
Operating Income (Loss)	$ 7,072	50,267	$ (47,744)	15,225
Wholesale [Member]
Segment Reporting Information [Line Items]
Number of Wholesale Customers | Store			3,400
Number of System Customers | Store	400		400
Revenues	$ 36,387	40,210	$ 116,681	112,519
Gross Profit	10,714	12,535	27,471	27,453
Depreciation and amortization expense	1,322	1,483	2,617	3,048
Operating Income (Loss)	5,246	6,459	16,917	15,053
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization expense	31	32	64	65
Operating Income (Loss)	(7,844)	(6,870)	(15,396)	(12,420)
DSS [Member]
Segment Reporting Information [Line Items]
Revenues	5,947	5,215	11,819	10,589
Gross Profit	4,662	4,141	9,408	8,555
Depreciation and amortization expense	1,855	2,335	4,020	4,639
Operating Income (Loss)	(2,196)	(2,809)	(3,651)	(4,812)
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(23,363)	(14,966)	(64,291)	(47,648)
Gross Profit	4,397	9,334	(2,379)	(480)
Operating Income (Loss)	$ 4,455	$ 9,384	$ (2,308)	$ (427)
Physical Stores [Member]
Segment Reporting Information [Line Items]
Number of Stores | Store	768		768
Virtual Stores [Member]
Segment Reporting Information [Line Items]
Number of Stores | Store	671		671