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Property, Plant And Equipment Narrative (Details) - USD ($)
12 Months Ended
Feb. 24, 2017
Feb. 26, 2016
Feb. 27, 2015
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, net $ 408,100,000 $ 411,600,000  
Depreciation 59,300,000 63,300,000 $ 57,100,000
Construction in Progress, Estimated Cost to Complete 21,600,000 27,500,000  
Machinery and Equipment [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, net 184,700,000 158,500,000  
Construction in Progress [Member]      
Property, Plant and Equipment [Line Items]      
Interest Costs Capitalized 0 0 $ 0
Building and Building Improvements [Member]      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, net $ 110,200,000 $ 110,100,000