Note 6 - Long-term Debt and Capital Leases (Details Textual)			3 Months Ended		9 Months Ended		21 Months Ended
	Dec. 03, 2013 USD ($)	May. 14, 2012 USD ($)	May. 31, 2016	Sep. 01, 2015 USD ($)	Mar. 01, 2016 USD ($)	Mar. 03, 2015 USD ($)	Mar. 01, 2016 USD ($)	Jun. 02, 2015 USD ($)
Senior Notes [Member]
Debt Instrument, Maturity Date							May 15, 2020
Debt Instrument, Cumulative Sinking Fund Payments								$ 0
Long-term Debt					$ 207,526,000		$ 207,526,000	209,182,000
Debt Instrument, Face Amount		$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage		7.625%
Debt Instrument, Unamortized Discount		$ 3,700,000			$ 1,866,000		$ 1,866,000	2,162,000
Debt Instrument, Term		8 years
Redemption Price Percentage on Principal Amount					100.00%		100.00%
Debt Instrument Repurchased Amount Authorized					$ 20,000,000		$ 20,000,000
Debt Instrument, Repurchase Amount					2,500,000		2,500,000
Debt Instrument, Repurchased Face Amount					2,400,000		2,400,000
Long-term Debt, Gross					212,546,000		212,546,000	215,000,000
Mortgages [Member] | Minimum [Member]
Range of Loan Balances					600,000		600,000
Mortgages [Member] | Maximum [Member]
Range of Loan Balances					7,000,000		7,000,000
Mortgages [Member]
Long-term Debt								8,300,000
Secured Debt					$ 21,300,000		21,300,000
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum					7.60%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum					10.17%
Long-term Debt and Capital Lease Obligations, Current					$ 9,700,000		9,700,000
Repayments of Long-term Debt				$ 8,300,000
Revolving Credit Facility [Member] | Federal Funds Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Revolving Credit Facility [Member] | Eurodollar [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.50%
Revolving Credit Facility [Member] | Eurodollar [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	3.50%
Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.50%
Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.50%
Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.40%
Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.75%
Revolving Credit Facility [Member] | Scenario, Forecast [Member]
Line of Credit Facility, Maximum Leverage Ratio			4.4
Line of Credit Facility, Minimum Fixed Charge Coverage Ratio			1.6
Revolving Credit Facility [Member]
Long-term Line of Credit					0		0
Debt Instrument, Term	4 years
Line of Credit Facility, Current Borrowing Capacity	$ 50,000,000
Option to Increase Revolving Credit Facility Capacity	$ 35,000,000
Credit Facility Interest Rate, Floor	0.00%
Debt Instrument, Collateral Amount, Appraised Value	$ 101,400,000
Debt Instrument, Collateral Amount					78,600,000		78,600,000
Line of Credit Facility, Remaining Borrowing Capacity					$ 38,400,000		38,400,000
Line of Credit Facility, Maximum Leverage Ratio					4.5
Line of Credit Facility, Minimum Fixed Charge Coverage Ratio					1.55
Sub-limit for Standby Letters of Credit [Member]
Line of Credit Facility, Current Borrowing Capacity	$ 25,000,000
Rent and Other Line Item [Member]
Interest Payable, Current					$ 5,000,000		5,000,000	1,100,000
Long-term Debt					228,881,000		228,881,000	240,889,000
Number of Restaurants	49
Secured Debt					21,335,000		21,335,000	31,607,000
Long-term Debt and Capital Lease Obligations, Current					10,964,000		$ 10,964,000	$ 10,078,000
Repayments of Long-term Debt					$ 12,664,000	$ 7,412,000
Payments of Debt Extinguishment Costs				$ 900,000
Number of Properties Released for Collateral Purposes with the Repayment of Debt				26