Note 4 - Income Taxes - Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Thousands	Mar. 03, 2020	Feb. 25, 2019
Deferred tax assets:
Net operating loss carryforwards	$ 2,608	$ 2,709
Tax credits carryforward	621	135
Stock options	1,120	1,206
Other, net	478	574
Deferred Tax Assets, Gross, Total	4,827	4,624
Valuation allowance on deferred tax assets	(3,175)	(2,755)
Total deferred tax assets, net of valuation allowance	1,652	1,869
Deferred tax liabilities:
Depreciation	(1,743)	(1,368)
Undistributed earnings	(2)	(333)
Other	(699)	(154)
Total deferred tax liabilities	(2,444)	(1,855)
Net deferred tax liability	$ (792)
Net deferred tax asset		$ 14