Note 9 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Feb. 25, 2018	Feb. 26, 2017
Deferred Profit Sharing [Member]
Deferred Compensation Arrangement with Individual, Contributions by Employer	$ 73	$ 74

Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

No definition available.

Name:	us-gaap_DeferredCompensationArrangementWithIndividualContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration