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Equity Earnings (Loss) of Joint Ventures (Details 2) - Equity Method Investee - USD ($)
$ in Thousands
12 Months Ended
Jul. 01, 2018
Jul. 02, 2017
Jul. 03, 2016
VAST LLC      
Schedule Of Equity Method Investments [Line Items]      
Sales to Joint Venture $ 3,151 $ 1,966 $ 304
Purchases from VAST LLC 183 245 149
Expenses charged to VAST LLC 984 843 1,034
Expenses charged from VAST LLC 886 1,134 1,526
Accounts receivable from joint venture entity 53    
Long-term loan receivable from VAST LLC   300  
Accounts payable to VAST LLC 87    
SAL LLC      
Schedule Of Equity Method Investments [Line Items]      
Sales to Joint Venture $ 98 $ 234 $ 363