Goodwill and Other Intangible Assets (Summary of Goodwill and Other Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	May 28, 2022	May 29, 2021	May 30, 2020
Goodwill
Goodwill, Balance	$ 35,525
Additions	8,481
Goodwill, Balance	44,006	$ 35,525
Other intangibles, Finite-Lived
Other intangibles, Amortization	(2,220)	(2,514)	$ (2,900)
Other Intangibles, Finite-Lived, Balance	17,411
Intangible Assets Net Including Goodwill [Abstract]
Total intangibles, Balance	55,866	58,341
Total intangibles, Additions	8,491	39
Total intangibles, Amortization	(2,220)	(2,514)	(2,900)
Total intangibles, Balance	62,137	55,866	58,341
Water Rights [Member]
Indefinite-lived Intangible Assets [Roll Forward]
Other Intangibles, Indefinite-Lived, Balance	720	720
Other Intangibles, Indefinite-Lived, Balance	720	720	720
Franchise Rights [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	16,699	18,327
Other Intangibles, Additions	0	0
Other intangibles, Amortization	(1,628)	(1,628)
Other Intangibles, Finite-Lived, Balance	15,071	16,699	18,327
Intangible Assets Net Including Goodwill [Abstract]
Total intangibles, Amortization	(1,628)	(1,628)
Customer Relationships [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	1,688	2,354
Other Intangibles, Additions	0	0
Other intangibles, Amortization	(362)	(666)
Other Intangibles, Finite-Lived, Balance	1,326	1,688	2,354
Intangible Assets Net Including Goodwill [Abstract]
Total intangibles, Amortization	(362)	(666)
Noncompete Agreements [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	1,019	1,179
Other Intangibles, Additions	0	0
Other intangibles, Amortization	(159)	(160)
Other Intangibles, Finite-Lived, Balance	860	1,019	1,179
Intangible Assets Net Including Goodwill [Abstract]
Total intangibles, Amortization	(159)	(160)
Right Of Use Intangible [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	29	0
Other Intangibles, Additions	10	39
Other intangibles, Amortization	(21)	(10)
Other Intangibles, Finite-Lived, Balance	18	29	0
Intangible Assets Net Including Goodwill [Abstract]
Total intangibles, Amortization	(21)	(10)
Trademarks [Member]
Other intangibles, Finite-Lived
Other Intangibles, Finite-Lived, Balance	186	236
Other Intangibles, Additions	0	0
Other intangibles, Amortization	(50)	(50)
Other Intangibles, Finite-Lived, Balance	136	186	$ 236
Intangible Assets Net Including Goodwill [Abstract]
Total intangibles, Amortization	$ (50)	$ (50)