Other Balance Sheet Data (Schedule Of Other Balance Sheet Data) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 03, 2013	Feb. 26, 2012
Inventories:
Raw materials	$ 6,639	$ 8,774
Work-in-progress	2,870	2,632
Finished goods	3,213	4,097
Manufacturing supplies	196	320
Inventory	12,918	15,823
Property, plant and equipment:
Property, plant and equipment, gross	171,467	176,299
Less accumulated depreciation and amortization	139,280	137,604
Property, plant and equipment, net	32,187	38,695
Goodwill and other intangible assets:
Goodwill	9,776	7,576
Other intangibles	78	85
Goodwill and other intangibles	9,854	7,661
Accrued liabilities:
Payroll and payroll related	2,210	2,698
Employee benefits	297	474
Workers' compensation	687	969
Professional fees	1,002	1,498
Restructuring (Note 9)	304	1,685
Other	1,516	1,492
Accrued liabilities	6,016	8,816
Land, Buildings And Improvements [Member]
Property, plant and equipment:
Property, plant and equipment, gross	39,517	41,169
Machinery, Equipment, Furniture And Fixtures [Member]
Property, plant and equipment:
Property, plant and equipment, gross	$ 131,950	$ 135,130