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Investment in Unconsolidated Entity - Additional Information (Detail)
$ in Thousands
6 Months Ended 12 Months Ended
Jul. 05, 2018
USD ($)
Jun. 21, 2017
USD ($)
board_member
Location
Jun. 30, 2017
USD ($)
Dec. 31, 2017
USD ($)
Jun. 29, 2018
Schedule of Equity Method Investments [Line Items]          
Investment in unconsolidated entity     $ 63,600    
Proceeds from non-controlling interest for investment in unconsolidated entity     $ 12,720    
Carrier Enterprise I          
Schedule of Equity Method Investments [Line Items]          
Ownership percentage by parent   80.00%      
Ownership percentage, by non-controlling owners   20.00%      
Russell Sigler Inc          
Schedule of Equity Method Investments [Line Items]          
Ownership interest acquired   35.00%     36.30%
Investment in unconsolidated entity   $ 63,600      
Contribution to investment in unconsolidated entity by controlling interest   50,880      
Proceeds from non-controlling interest for investment in unconsolidated entity   $ 12,720      
Ownership percentage needed for right to purchase up to 100%   85.00%      
Total number of board members | board_member   6      
Number of board members that can be appointed based on ownership | board_member   2      
Equity method investment, additional ownership interest acquired         1.40%
Russell Sigler Inc | Subsequent Event          
Schedule of Equity Method Investments [Line Items]          
Investment in unconsolidated entity $ 3,760        
Contribution to investment in unconsolidated entity by controlling interest 3,008        
Proceeds from non-controlling interest for investment in unconsolidated entity $ 752        
Russell Sigler Inc | Western United States          
Schedule of Equity Method Investments [Line Items]          
Number of locations | Location   30      
Russell Sigler sales       $ 680,000