Note 7 - Closures and Impairments Expense - Closures and Impairments Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 01, 2015	Dec. 02, 2014	Dec. 01, 2015	Dec. 02, 2014
Property [Member] | Continuing Operations [Member]
Closures and impairments from continuing operations:
Closure and impairment	$ 6,215	$ 1,216	$ 8,792	$ 2,272
Continuing Operations [Member] | Other Closing Expense [Member]
Closures and impairments from continuing operations:
Closure and impairment	498	395	619	628
Continuing Operations [Member]
Closures and impairments from continuing operations:
Closure and impairment	10,073	1,075	12,785	2,557
Closing expense including rent and other lease charges	3,721	295	4,325	761
Gain on sale of surplus properties	(361)	(831)	(951)	(1,104)
Closure and impairment	$ 10,073	$ 1,075	12,785	$ 2,557
Closing expense including rent and other lease charges			$ 4,325