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Derivative financial instruments Textuals (Details) - USD ($)
6 Months Ended
Dec. 29, 2018
Jun. 30, 2018
Derivative fair value    
Derivative assets fair value $ 6,857,000 $ 2,259,000
Derivative liabilities fair value $ 5,741,000 $ 7,083,000
Minimum | Foreign Exchange Forward    
Derivatives, Fair Value [Line Items]    
Maximum maturity of foreign exchange contracts (less than one year) 60 days  
Maximum | Foreign Exchange Forward    
Derivatives, Fair Value [Line Items]    
Maximum maturity of foreign exchange contracts (less than one year) 1 year