Note 7 - Closures and Impairments Expense, Including Trademark Impairments - Closures and Impairments Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 28, 2017	Mar. 01, 2016	Feb. 28, 2017	Mar. 01, 2016
Closures and Impairments Expenses	$ 13,441	$ 6,123	$ 59,341	$ 20,907
Closed restaurant lease reserves			17,445
Inventory write-off			2,754
Trademark impairment
Continuing Operations [Member]
Closures and Impairments Expenses	13,441	6,123	59,341	20,907
Closed restaurant lease reserves	(133)	(1,207)	17,445	3,118
Inventory write-off			2,754
Severance benefits	13	68	1,606	213
Gain on sale of properties	(2,334)	(79)	(68)	(1,030)
Continuing Operations [Member] | Lime Fresh Trademark [Member]
Trademark impairment				1,999
Continuing Operations [Member] | Other Closing Expense [Member]
Closures and Impairments Expenses	949	403	4,830	877
Property [Member] | Continuing Operations [Member]
Closures and Impairments Expenses	$ 14,946	$ 6,938	$ 32,774	$ 15,730