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Acquisitions - Additional Information (Detail)
6 Months Ended
Jan. 06, 2017
USD ($)
ft²
State
Jul. 15, 2017
USD ($)
Dec. 31, 2016
USD ($)
Business Acquisition [Line Items]      
Payments to acquire certain assets and assume liabilities in cash   $ 214,595,000  
Goodwill   366,636,000 $ 322,686,000
Food Distribution Segment [Member]      
Business Acquisition [Line Items]      
Goodwill $ 45,200,000    
Caito Foods Service and Blue Ribbon Transport [Member]      
Business Acquisition [Line Items]      
Payments to acquire certain assets and assume liabilities in cash 214,600,000    
Business combination, cash acquired 2,500,000    
Business combination, property and equipment acquired 77,500,000    
Business combination, Intangible assets acquired $ 72,900,000    
Amortization of intangible assets, period 15 years    
Earn-out opportunities potential to pay sellers $ 27,400,000 3,400,000  
Business combination, contingent consideration liability maximum reimbursement initial purchase price $ 15,000,000    
Total acquisition related costs incurred   4,900,000  
Acquisition related costs incurred and recorded in merger/acquisition and integration expense during period   $ 2,700,000  
Caito Foods Service [Member]      
Business Acquisition [Line Items]      
Service distributors across number of states | State 22    
Area of new Fresh Kitchen facility | ft² 118,000