Note 4 - Income Taxes - Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Thousands	Mar. 03, 2019	Feb. 25, 2018
Deferred tax assets:
Net operating loss carryforwards	$ 2,709	$ 2,869
Tax credits carryforward	135	135
Stock options	1,206	1,269
Other, net	574	184
	4,624	4,457
Valuation allowance on deferred tax assets	(2,755)	(2,981)
Total deferred tax assets, net of valuation allowance	1,869	1,476
Deferred tax liabilities:
Depreciation	(1,368)	(1,974)
Undistributed earnings	(333)	(497)
Other	(154)	(138)
Total deferred tax liabilities	(1,855)	(2,609)
Net deferred tax asset	$ 14
Net deferred tax liability		$ (1,133)