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Acquisitions and Divestitures - Additional Information (Details)
 3 Months Ended 12 Months Ended
May. 06, 2015
USD ($)
Jul. 01, 2014
USD ($)
Jun. 30, 2014
USD ($)
facility
Sep. 30, 2014
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2011
Business Acquisition [Line Items]                
Proceeds from disposition of business         $ 7,200,000 $ 43,500,000 $ 0  
Portland Manufacturing Facility                
Business Acquisition [Line Items]                
Proceeds from disposition of business $ 7,200,000              
Gain (loss) on disposal         400,000      
U.S. Innerspring                
Business Acquisition [Line Items]                
Gain (loss) on disposal           (23,200,000)    
Number of divestitures | facility     3          
Total consideration     $ 47,800,000 $ 45,000,000        
Other non-cash consideration     1,500,000          
Working capital adjustment       $ 2,800,000        
Assets of disposal group     $ 66,800,000          
Transaction costs           1,400,000    
Minimum                
Business Acquisition [Line Items]                
Fiscal period duration               364 days
Maximum                
Business Acquisition [Line Items]                
Fiscal period duration               371 days
Sealy                
Business Acquisition [Line Items]                
Direct transaction costs         $ 0 $ 0 18,700,000  
Incremental interest expense             $ 19,900,000  
Japanese Third Party Acquisition                
Business Acquisition [Line Items]                
Net consideration transferred   $ 8,500,000