Note 6 - Long-term Debt and Capital Leases (Details)			3 Months Ended					6 Months Ended	12 Months Ended
	Dec. 03, 2013 USD ($)	May. 14, 2012 USD ($)	May. 31, 2016	Mar. 01, 2016	Dec. 01, 2015	Sep. 01, 2015 USD ($)	Sep. 02, 2014 USD ($)	Mar. 01, 2016	Jun. 02, 2015 USD ($)	Jul. 09, 2015
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Repurchase Amount (in Dollars)						$ 0
Secured Debt (in Dollars)						22,696,000			$ 31,607,000
Repayments of Long-term Debt (in Dollars)						8,901,000	$ 1,205,000
Payments of Debt Extinguishment Costs (in Dollars)						900,000
Subsequent Event [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Number of Properties, Released for Collateral Purposes with the Repayment of Debt										26
Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Term	4 years
Line of Credit Facility, Current Borrowing Capacity (in Dollars)	$ 50,000,000
Option to Increase Revolving Credit Facility Capacity (in Dollars)	35,000,000
Credit Facility Interest Rate, Floor									0.00%
Debt Instrument, Collateral Amount, Appraised Value (in Dollars)	101,400,000
Debt Instrument, Collateral Amount (in Dollars)						78,800,000
Long-term Line of Credit (in Dollars)						0
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars)						$ 38,300,000
Line of Credit Facility Maximum Leverage Ratio						4.75
Line of Credit Facility, Minimum Fixed Charge Coverage Ratio						1.45
Revolving Credit Facility [Member] | Scenario, Forecast [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Line of Credit Facility Maximum Leverage Ratio			4.40					4.50
Line of Credit Facility, Minimum Fixed Charge Coverage Ratio			1.60	1.55	1.50
Sublimit for Standby Letters of Credit [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Line of Credit Facility, Current Borrowing Capacity (in Dollars)	$ 25,000,000
Rent and Other Line Item [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Interest Payable, Current (in Dollars)						$ 5,100,000			$ 1,100,000
Federal Funds Rate [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									0.50%
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									1.00%
Senior Notes [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Face Amount (in Dollars)		$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage		7.625%
Debt Instrument, Unamortized Discount (in Dollars)		$ 3,700,000				2,073,000			$ 2,162,000
Debt Instrument, Term		8 years
Debt Instrument, Maturity Date									May 15, 2020
Redemption Price Percentage on Principal Amount									100.00%
Percentage of Senior Notes Redeemed from Equity Offering									35.00%
Debt Instrument, Cumulative Sinking Fund Payments (in Dollars)									$ 0
Debt Instrument Repurchased Amount Authorized (in Dollars)						20,000,000
Mortgages [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Secured Debt (in Dollars)						$ 22,700,000
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum						7.60%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum						10.17%
Repayments of Long-term Debt (in Dollars)						$ 8,300,000
Minimum [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage									0.40%
Minimum [Member] | Eurodollar [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									2.50%
Minimum [Member] | Base Rate [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									1.50%
Minimum [Member] | Mortgages [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Range of Loan Balances (in Dollars)						700,000
Maximum [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage									0.75%
Maximum [Member] | Eurodollar [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									3.50%
Maximum [Member] | Base Rate [Member] | Revolving Credit Facility [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate									2.50%
Maximum [Member] | Mortgages [Member]
Note 6 - Long-term Debt and Capital Leases (Details) [Line Items]
Range of Loan Balances (in Dollars)						$ 7,200,000