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Cincinnati Sub-Zero Acquisition - Summary of Preliminary Allocation (Detail) - USD ($)
$ in Thousands
12 Months Ended
Apr. 01, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]        
Goodwill   $ 69,685 $ 51,735 $ 27,765
Purchase price   66,994 $ 73,593 $ (107)
Cincinnati Sub-Zero Products, LLC        
Business Acquisition [Line Items]        
Accounts receivable $ 10,790      
Inventory 16,284      
Prepaid expenses and other assets 1,143      
Property and equipment 12,919 $ 12,919    
Goodwill 24,622      
Assumed liabilities (13,435)      
Net assets acquired 73,593      
Cash acquired on acquisition 985      
Purchase price 74,578      
Cincinnati Sub-Zero Products, LLC | Customer relationships        
Business Acquisition [Line Items]        
Intangible assets 11,700      
Cincinnati Sub-Zero Products, LLC | Technology        
Business Acquisition [Line Items]        
Intangible assets 3,200      
Cincinnati Sub-Zero Products, LLC | Trade name        
Business Acquisition [Line Items]        
Intangible assets $ 6,370