Note 4 - Income Taxes - Components of Deferred Tax Liabilities and Assets (Details) - USD ($) $ in Thousands	Feb. 25, 2018	Feb. 26, 2017
Deferred tax assets:
Depreciation and amortization	$ 2,323	$ 3,740
Net operating loss carryforwards	10,809	11,049
Tax credits carryforward	360	677
Stock options	1,269	1,865
Other, net	671	282
	15,432	17,613
Valuation allowance on deferred tax assets	(10,602)	(10,571)
Total deferred tax assets, net of valuation allowance	4,830	7,042
Deferred tax liabilities:
Depreciation	(619)	(572)
Undistributed earnings	(3,200)	(47,509)
Other	(771)	(781)
Total deferred tax liabilities	(4,590)	(48,862)
Net deferred tax asset (liability)	240	41,820
Net deferred tax asset (liability)	$ (240)	$ (41,820)