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Acquisitions Acquisition (Narrative) (Details) - USD ($)
3 Months Ended 12 Months Ended
Jun. 12, 2017
Dec. 14, 2016
Mar. 02, 2019
Mar. 03, 2018
Mar. 02, 2019
Mar. 03, 2018
Business Acquisition            
Net sales     $ 353,453,000 $ 390,669,000 $ 1,398,733,000 $ 1,474,021,000
EFCO Corporation            
Business Acquisition            
Ownership percentage acquired 100.00%          
Payments to acquire business $ 190,000,000          
Net working capital $ 1,422,000          
Sotawall            
Business Acquisition            
Payments to acquire business   $ 138,000,000        
Net working capital   $ 10,682