Note 3 - Other Balance Sheet Data (Details) - Other Balance Sheet Data (USD $) In Thousands, unless otherwise specified	Mar. 02, 2014	Mar. 03, 2013
Inventories:
Raw materials	$ 7,253	$ 6,639
Work-in-process	3,097	2,870
Finished goods	3,223	3,213
Manufacturing supplies	298	196
	13,871	12,918
Property, plant and equipment:
Property, plant and equipment, gross	172,824	171,467
Less accumulated depreciation and amortization	143,150	139,280
	29,674	32,187
Goodwill and other intangible assets:
Goodwill	9,776	9,776
Other intangibles	71	78
	9,847	9,854
Accrued liabilities:
Payroll and payroll related	1,910	2,210
Employee benefits	274	297
Workers' compensation	354	687
Professional fees	1,116	1,002
Restructuring (Note 9)	198	304
Other	1,287	1,516
	5,139	6,016
Land, Buildings and Improvements [Member]
Property, plant and equipment:
Property, plant and equipment, gross	39,686	39,517
Machinery, Equipment, Furniture and Fixtures [Member]
Property, plant and equipment:
Property, plant and equipment, gross	$ 133,138	$ 131,950