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Acquisitions - Additional Information (Detail) - USD ($)
6 Months Ended
Jan. 05, 2018
Jan. 06, 2017
Jul. 15, 2017
Jul. 14, 2018
Dec. 30, 2017
Business Acquisition [Line Items]          
Payments to acquire certain assets and assume liabilities in cash     $ 214,595,000    
Goodwill       $ 178,648,000 $ 178,648,000
Food Distribution Segment [Member]          
Business Acquisition [Line Items]          
Goodwill   $ 46,300,000      
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   76,700,000      
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      
Increase in goodwill, due to updated valuation of long-lived assets $ 1,300,000