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Acquisitions - Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination (Details) - USD ($)
$ in Millions
6 Months Ended
Sep. 17, 2015
Jul. 28, 2014
Nov. 28, 2015
Business Acquisition      
Trade Names and Trademarks     $ 0.0
Design Within Reach      
Business Acquisition      
Total Intangible Assets Acquired   $ 68.5  
Exclusive Distribution Agreements | Design Within Reach      
Business Acquisition      
Finite-lived Intangible Assets Acquired   $ 0.2  
Finite-Lived Intangible Asset, Useful Life   1 year 6 months  
Customer Relationships | George Nelson Bubble Lamp Product Line      
Business Acquisition      
Finite-lived Intangible Assets Acquired $ 0.6    
Finite-Lived Intangible Asset, Useful Life 10 years    
Customer Relationships | Design Within Reach      
Business Acquisition      
Finite-lived Intangible Assets Acquired   $ 12.0  
Product Development Designs | Design Within Reach      
Business Acquisition      
Finite-lived Intangible Assets Acquired   $ 1.2  
Finite-Lived Intangible Asset, Useful Life   7 years  
Exclusive Manufacturing Agreement | George Nelson Bubble Lamp Product Line      
Business Acquisition      
Finite-lived Intangible Assets Acquired $ 2.5    
Finite-Lived Intangible Asset, Useful Life 10 years    
Trade Names | Design Within Reach      
Business Acquisition      
Trade Names and Trademarks   $ 55.1  
Minimum | Customer Relationships | Design Within Reach      
Business Acquisition      
Finite-Lived Intangible Asset, Useful Life   10 years  
Maximum | Customer Relationships | Design Within Reach      
Business Acquisition      
Finite-Lived Intangible Asset, Useful Life   16 years