Note 5 - Long-term Debt (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended	23 Months Ended
	Aug. 28, 2016 USD ($)	Aug. 30, 2015 USD ($)	Aug. 28, 2016 USD ($)	Aug. 30, 2015 USD ($)	Feb. 28, 2016 USD ($)	Jan. 15, 2016 USD ($)	Feb. 12, 2014 USD ($)
PNC Bank National Association [Member] | Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity							$ 2,000
PNC Bank National Association [Member] | To Finance a Special Dividend Paid to Shareholders [Member]
Proceeds from Lines of Credit						$ 52,000
PNC Bank National Association [Member] | To Continue the Loan [Member]
Proceeds from Lines of Credit						$ 52,000
PNC Bank National Association [Member] | Standby Letters of Credit [Member]
Number of Standby Letter of Credit Issued						2
Long-term Line of Credit						$ 1,075
PNC Bank National Association [Member]
Line of Credit Facility, Maximum Borrowing Capacity							$ 104,000
Repayments of Long-term Lines of Credit					$ 10,000
Interest Expense	$ 334	$ 356	$ 667	$ 725
HSBC Bank USA [Member] | Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity						2,000
HSBC Bank USA [Member] | Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Periodic Payment			$ 750
Number of Quarterly Installments			12
HSBC Bank USA [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			1.15%
HSBC Bank USA [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 75,000
Long-term Line of Credit	$ 73,500		$ 73,500
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.10%
Minimum Gross Leverage Charge Ratio	3.75		3.75
Minimum Interest Coverage Ratio	1.1		1.1
Minimum Domestic Liquid Assets Ratio	2		2
Debt Agreement, Minimum Domestic Liquid Assets Required	$ 10,000		$ 10,000
Line of Credit Facility, Interest Rate at Period End	1.75%		1.75%
Interest Expense	$ 334	$ 356	$ 667	$ 725