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Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 27, 2019	Apr. 28, 2018	Apr. 29, 2017	Apr. 30, 2016	Jan. 26, 2019
Receivables, Net, Current	$ 98,246	$ 100,060
Advances on Inventory Purchases	6,339	9,554
Allowance for Doubtful Accounts Receivable	2,135	2,083
Depreciation	44,550	46,531	$ 41,224
Property, Plant and Equipment, Gross	600,872	571,348
Content development costs	11,593	514
Intangible Assets, Net (Excluding Goodwill)	194,978	219,129
Goodwill	4,700	49,282	329,467		$ 49,282
Goodwill, Impairment Loss	49,282	313,130
Marketing and Advertising Expense		10,636	10,691	$ 7,437
Inventory, LIFO Reserve, Effect on Income, Net	32,847
Liabilities, Current	408,538	413,465
Other Asset Impairment Charges	8,466
Asset Impairment Charges	0	0	23
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	491,095	460,061
Property, Plant and Equipment, Net	109,777	111,287
Content amortization expenses	1,096	0	$ 0
Construction in Progress [Member]
Property, Plant and Equipment, Gross	5,499	6,546
Leasehold Improvements [Member]
Property, Plant and Equipment, Gross	$ 148,015	148,413
Leasehold Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	1 year
Leasehold Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	15 years
Display fixtures and equipment [Member]
Property, Plant and Equipment, Gross	$ 240,171	237,823
Display fixtures and equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Display fixtures and equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Software and Software Development Costs [Member]
Property, Plant and Equipment, Gross	$ 136,267	123,575
Software and Software Development Costs [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	2 years
Software and Software Development Costs [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Furniture and Fixtures [Member]
Property, Plant and Equipment, Gross	$ 59,327	54,477
Furniture and Fixtures [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	2 years
Furniture and Fixtures [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	7 years
Content Development Costs [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Content Development Costs [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life	5 years
Other Noncurrent Assets [Member]
Restricted Cash and Cash Equivalents	$ 755	742
Deferred Tax Asset [Domain]
Liabilities, Current	$ 7,260
Retail Segment [Member]
Largest Suppliers Percentage	37.00%
Goodwill	$ 0	20,538			20,538
Wholesale [Member]
Largest Suppliers Percentage	34.00%
Goodwill	$ 0	28,743			$ 28,744
Goodwill, Impairment Loss		28,744
DSS [Member]
Goodwill	4,700	0
Retail [Member]
Goodwill	0
Wholesale [Member]
Goodwill	0
MBS [Member]
Goodwill		49,282
BNC [Member]
Goodwill		0
Finite-Lived Intangible Assets [Member]
Other Asset Impairment Charges	8,138
Property, Plant and Equipment [Member]
Other Asset Impairment Charges	328
Trade Accounts Receivable [Member]
Receivables, Net, Current	74,311	67,634
Credit Card Receivable [Member]
Receivables, Net, Current	4,173	3,824
Accounts Receivable [Member]
Receivables, Net, Current	$ 13,423	$ 19,048