Goodwill And Other Intangible Assets (Schedule Of Other Intangibles) (Details) (USD $) In Thousands, unless otherwise specified	May 31, 2014		Jun. 01, 2013
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 23,939		$ 23,028
Accumulated amortization	(13,516)		(10,702)
Franchise Rights [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	5,284		5,284
Accumulated amortization	(3,930)		(3,453)
Customer Relationships [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	17,644		17,644
Accumulated amortization	(9,554)		(7,237)
Non-compete Agreements [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	100		100
Accumulated amortization	(32)		(12)
Right Of Use Intangible [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, finite-lived	191
Water Rights [Member]
Schedule of Finite-Lived And Indefinite-Lived Intangible Assets [Line Items]
Gross carrying amount, indefinite-lived	$ 720	[1]

[1] Water rights are an indefinite life intangible asset.