Property, Plant and Equipment (Details) (USD $)	12 Months Ended
	Mar. 02, 2013	Mar. 03, 2012	Feb. 26, 2011
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 426,335,000	$ 402,986,000
Less accumulated depreciation	(257,387,000)	(243,439,000)
Net property, plant and equipment	168,948,000	159,547,000	179,201,000
Depreciation expense	24,300,000	24,600,000	25,900,000
Land
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	6,851,000	6,954,000
Buildings and improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	128,341,000	129,282,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	224,825,000	215,892,000
Office equipment and furniture
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	47,495,000	43,550,000
Construction in progress
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 18,823,000	$ 7,308,000