Quarterly Earnings (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Apr. 27, 2024	Jan. 27, 2024	Oct. 28, 2023	Jul. 29, 2023	Apr. 29, 2023	Jan. 28, 2023	Oct. 29, 2022	Jul. 30, 2022	Apr. 27, 2024	Apr. 29, 2023
Text Block [Abstract]
Revenues	$ 235,922	$ 456,673	$ 610,379	$ 264,161	$ 241,847	$ 438,054	$ 608,633	$ 254,674	$ 1,567,135	$ 1,543,208
Gross Profit	69,864	100,036	136,242	50,634	58,282	97,011	138,141	56,005	356,776	349,439
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent	(27,436)	(9,928)	24,854	(49,971)	(41,852)	(22,134)	24,168	(50,322)	(62,481)	(90,140)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent	72	289	(674)	(417)	(4,398)	(2,915)	(2,024)	(2,385)	(730)	(11,722)
Net Income (Loss) Attributable to Parent	$ (27,364)	$ (9,639)	$ 24,180	$ (50,388)	$ (46,250)	$ (25,049)	$ 22,144	$ (52,707)	$ (63,211)	$ (101,862)
Income (Loss) from Continuing Operations, Per Basic Share	$ (10.27)	$ (3.71)	$ 9.36	$ (18.87)	$ (15.82)	$ (8.37)	$ 9.16	$ (19.18)	$ (23.47)	$ (34.17)
Income (Loss) from Continuing Operations, Per Diluted Share	(10.27)	(3.71)	9.36	(18.87)	(15.82)	(8.37)	9.14	(19.18)	(23.47)	(34.17)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0.03	0.11	(0.25)	(0.16)	(1.66)	(1.10)	(0.77)	(0.91)	(0.28)	(4.44)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0.03	0.11	(0.25)	(0.16)	(1.66)	(1.10)	(0.77)	(0.91)	(0.28)	(4.44)
Earnings Per Share, Basic	(10.24)	(3.60)	9.11	(19.03)	(17.48)	(9.47)	8.39	(20.09)	(23.75)	(38.61)
Earnings Per Share, Diluted	$ (10.24)	$ (3.60)	$ 9.11	$ (19.03)	$ (17.48)	$ (9.47)	$ 8.37	$ (20.09)	$ (23.75)	$ (38.61)
Weighted Average Number of Shares Outstanding, Basic	2,673	2,673	2,655	2,648	2,646	2,646	2,637	2,624	2,662	2,638
Weighted Average Number of Shares Outstanding, Diluted	2,673	2,673	2,655	2,648	2,646	2,646	2,645	2,624	2,662	2,638
Restructuring and other charges	$ 7,089	$ 3,413	$ 4,274	$ 4,633	$ 5,341	$ 4,127	$ 260	$ 375	$ 19,409	$ 10,103
Other Nonrecurring Expense	1,368	5,798	0	0	0	6,008	0	0	7,166	6,008
Interest Income (Expense), Net	$ 10,827	$ 10,620	$ 10,664	$ 8,254	$ 7,011	$ 6,918	$ 4,886	$ 3,868	$ 40,365	$ 22,683