Note 5 - Cash and Cash Equivalents (Details Textual) - USD ($) $ in Millions	3 Months Ended
May 27, 2017	Feb. 25, 2017
Number of Business Days for Settlement of Credit and Debit Card Receivable	5 days
Credit and Debit Card Receivables, at Carrying Value	$ 100.6	$ 86.6

Amount due the Entity as a result of customers utilizing point of sale debit or credit cards in exchange transactions with the entity which are short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition.

No definition available.

Name:	us-gaap_CreditAndDebitCardReceivablesAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant