Segment Reporting Segment Reporting (Details) $ in Thousands	3 Months Ended								12 Months Ended
	May 02, 2020 USD ($) Store	Jan. 25, 2020 USD ($)	Oct. 26, 2019 USD ($)	Jul. 27, 2019 USD ($)	Apr. 27, 2019 USD ($)	Jan. 26, 2019 USD ($)	Oct. 27, 2018 USD ($)	Jul. 28, 2018 USD ($)	May 02, 2020 USD ($) Store segment	Apr. 27, 2019 USD ($)	Apr. 28, 2018 USD ($)
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment									$ 36,192	$ 46,420	$ 42,809
Number of Reportable Segments | segment									3
Number of Stores | Store	1,419								1,419
Revenues	$ 256,886	$ 502,292	$ 772,228	$ 319,657	$ 334,385	$ 548,008	$ 814,766	$ 337,484	$ 1,851,063	2,034,643	2,203,617
Gross Profit	65,407	$ 118,535	$ 186,950	$ 71,657	117,403	$ 132,953	$ 210,760	$ 66,610	442,549	527,726	557,233
Depreciation and amortization expense									61,860	65,865	65,586
Operating Income (Loss)									(42,783)	(27,654)	(262,703)
Interest Income (Expense), Net									(7,445)	(9,780)	(10,306)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest									(50,228)	(37,434)	(273,009)
Other Nonrecurring Expense										49,282	313,130
Assets	1,156,432				946,180				1,156,432	946,180
Goodwill	4,700				4,700				4,700	4,700	49,282
Retail [Member]
Segment Reporting Information [Line Items]
Other Nonrecurring Expense										20,538
Retail Segment [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment									(28,546)	(33,008)	(38,598)
Revenues									1,712,892	1,889,008	2,024,541
Gross Profit									383,282	451,871	482,226
Depreciation and amortization expense									47,099	51,728	53,955
Operating Income (Loss)									(24,445)	3,751	(265,843)
Other Nonrecurring Expense										20,538
Assets	867,288				707,975				867,288	707,975
Goodwill	0				0				0	0
Wholesale [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment									$ (2,126)	(1,824)	(1,559)
Number of Wholesale Customers | Store									3,400
Revenues									$ 198,353	223,374	258,369
Gross Profit									39,805	56,341	60,328
Depreciation and amortization expense									5,963	6,014	6,188
Operating Income (Loss)									12,909	(2,131)	31,388
Other Nonrecurring Expense										28,744
Assets	248,464				191,976				248,464	191,976
Goodwill	0				0				0	0
DSS [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment									(5,425)	(11,444)	(2,620)
Revenues									23,661	21,339	15,762
Gross Profit									19,313	20,030	15,403
Depreciation and amortization expense									8,670	7,974	5,253
Operating Income (Loss)									(8,529)	(3,345)	226
Assets	35,689				40,543				35,689	40,543
Goodwill	4,700				4,700				4,700	4,700
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues									(83,843)	(99,078)	(95,055)
Gross Profit									149	(516)	(724)
Operating Income (Loss)									359	(466)	(724)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment									(95)	(144)	(32)
Depreciation and amortization expense									128	149	190
Operating Income (Loss)									(23,077)	(25,463)	(27,750)
Assets	$ 4,991				$ 5,686				$ 4,991	$ 5,686
BNC [Member]
Segment Reporting Information [Line Items]
Other Nonrecurring Expense											$ 313,130
Wholesale [Member]
Segment Reporting Information [Line Items]
Number of System Customers | Store	400								400
Physical Stores [Member]
Segment Reporting Information [Line Items]
Number of Stores | Store	772								772
Virtual Stores [Member]
Segment Reporting Information [Line Items]
Number of Stores | Store	647								647