Note 7 - Closures and Impairments Expense - Closures and Impairments Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 05, 2017	Aug. 30, 2016
Closures and Impairments Expenses	$ 7,819	$ 30,192
Closed restaurant lease reserves	234
Inventory write-off		2,754
Continuing Operations [Member]
Closures and Impairments Expenses	7,819	30,192
Closed restaurant lease reserves	234	17,728
Inventory write-off		2,754
Severance benefits	14	1,760
Gain on sale of properties	(2,320)	(57)
Continuing Operations [Member] | Other Closing Expense [Member]
Closures and Impairments Expenses	767	1,427
Property [Member] | Continuing Operations [Member]
Closures and Impairments Expenses	$ 9,124	$ 6,580