Note 3 - Other Balance Sheet Data - Other Balance Sheet Data (Details) - USD ($) $ in Thousands	Feb. 25, 2018	Feb. 26, 2017
Inventories:
Raw materials	$ 6,826	$ 5,842
Work-in-process	2,005	2,329
Finished goods	2,173	2,585
Manufacturing supplies	152	349
	11,156	11,105
Property, plant and equipment:
Land, buildings and improvements	166,400	169,518
Less: accumulated depreciation and amortization	149,868	150,880
	16,532	18,638
Goodwill and other intangible assets:
Goodwill	9,776	9,776
Other intangibles	42	49
	9,818	9,825
Accrued liabilities:
Payroll and payroll related	1,263	1,361
Employee benefits	93	147
Workers' compensation	210	154
Professional fees	597	578
Restructuring (Note 8)	2,326	16
Other	892	1,161
	5,381	3,417
Land, Buildings and Improvements [Member]
Property, plant and equipment:
Land, buildings and improvements	39,355	39,822
Machinery, Equipment, Furniture and Fixtures [Member]
Property, plant and equipment:
Land, buildings and improvements	$ 127,045	$ 129,696