Note 5 - Intangible Assets - Other Intangible Assets (Details) - USD ($)		12 Months Ended
	Feb. 27, 2017	May 28, 2017	May 29, 2016		May 31, 2015
Balance		$ 21,396,000	$ 56,263,000		$ 57,148,000
Amortization expense		(885,000)	(867,000)		(885,000)
Balance		22,811,000	21,396,000		56,263,000
Impairment during the period	$ 0	0	(34,000,000)	[1]		[1]
Finite-lived Intangible Assets Acquired		2,300,000
Trademarks and Trade Names [Member]
Balance		14,428,000	48,428,000		48,428,000
Amortization expense
Balance		16,028,000	14,428,000		48,428,000
Impairment during the period			(34,000,000)
Finite-lived Intangible Assets Acquired		1,600,000
Customer Relationships [Member]
Balance		6,968,000	7,835,000		8,720,000
Amortization expense		(885,000)	(867,000)		(885,000)
Balance		6,783,000	6,968,000		$ 7,835,000
Impairment during the period
Finite-lived Intangible Assets Acquired		$ 700,000

[1] See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies for a discussion of accounting principles adopted during the period.