Note 6 - Long-term Debt and Capital Leases - Long-Term Debt and Capital Lease Obligations (Details) - USD ($)	Dec. 01, 2015	Jun. 02, 2015
Senior Notes [Member]
Senior unsecured notes	$ 215,000,000	$ 215,000,000
Unamortized discount	(1,981,000)	(2,162,000)
Unamortized debt issuance costs	(3,349,000)	(3,656,000)
Senior unsecured notes less unamortized discount and debt issuance costs	209,670,000	209,182,000
Unamortized debt issuance costs	(160,000)	(283,000)
Senior unsecured notes less unamortized discount and debt issuance costs	231,726,000	240,889,000
Mortgage loan obligations	22,023,000	31,607,000
Unamortized premium - mortgage loan obligations	193,000	383,000
Capital lease obligations	190,000	206,000
	231,916,000	241,095,000
Current maturities of long-term debt, including capital leases	1,867,000	10,078,000
Long-term debt and capital leases, less current maturities	$ 230,049,000	$ 231,017,000