Discontinued Operations - Components of Loss from Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended								9 Months Ended	12 Months Ended
	May 29, 2022	Feb. 27, 2022	Nov. 28, 2021	Aug. 29, 2021	May 30, 2021	Feb. 28, 2021	Nov. 29, 2020	Aug. 30, 2020	Feb. 27, 2022	May 29, 2022	May 30, 2021	May 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations										$ (51,276)	$ (28,994)	$ (20,662)
Income tax benefit										121	5,898	4,342
Loss from discontinued operations, net of tax	$ (1,879)	$ (4,785)	$ (42,196)	$ (2,295)	$ (2,085)	$ (4,033)	$ (10,934)	$ (6,044)	$ (49,276)	(51,155)	(23,096)	(16,320)
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of Eat Smart		235							235
Restructuring costs		3,209							4,642
Total operating costs and expenses		4,605							52,202
Operating loss		(4,766)							(47,002)
Income tax benefit		185							408
Loss from discontinued operations, net of tax		$ (4,785)							$ (49,276)
Eat Smart | Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Product sales										186,755	372,615	430,300
Cost of product sales										181,555	341,612	394,699
Gross profit										5,200	31,003	35,601
Research and development										1,918	2,799	3,517
Selling, general and administrative										13,350	27,704	31,514
Impairment of goodwill										32,057	0	0
Loss on sale of Eat Smart										336	0	0
Restructuring costs										6,133	13,862	13,231
Total operating costs and expenses										53,794	44,365	48,262
Operating loss										(48,594)	(13,362)	(12,661)
Dividend income										0	1,125	1,125
Interest income										0	0	31
Interest expenses										(2,682)	(4,957)	(4,957)
Other income (expense), net										0	(11,800)	(4,200)
Loss from discontinued operations										(51,276)	(28,994)	(20,662)
Income tax benefit										121	5,898	4,342
Loss from discontinued operations, net of tax										$ (51,155)	$ (23,096)	$ (16,320)