Business Segment Reporting - Operations by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 29, 2021	Aug. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 128,788	$ 135,643
Gross profit	17,519	16,347
Net (loss) income	(9,477)	(11,000)
Depreciation and amortization	4,763	4,748
Dividend income	0	281
Interest income	27	8
Interest expense	7,917	3,109
Income tax (benefit) expense	(2,112)	(4,309)
Corporate overhead allocation	0	0
Curation Foods
Segment Reporting Information [Line Items]
Net sales	106,836	113,839
Gross profit	11,755	11,345
Net (loss) income	(2,128)	(8,271)
Depreciation and amortization	3,190	3,410
Dividend income		281
Interest income	0	0
Interest expense	1,376	1,376
Income tax (benefit) expense	(679)	(2,612)
Corporate overhead allocation	1,471	1,856
Lifecore
Segment Reporting Information [Line Items]
Net sales	21,952	21,804
Gross profit	5,764	5,002
Net (loss) income	580	112
Depreciation and amortization	1,547	1,310
Dividend income		0
Interest income	20	0
Interest expense	0	0
Income tax (benefit) expense	183	35
Corporate overhead allocation	1,137	1,403
Other
Segment Reporting Information [Line Items]
Net sales	0	0
Gross profit	0	0
Net (loss) income	(7,929)	(2,841)
Depreciation and amortization	26	28
Dividend income		0
Interest income	7	8
Interest expense	6,541	1,733
Income tax (benefit) expense	(1,616)	(1,732)
Corporate overhead allocation	$ (2,608)	$ (3,259)