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Asset Acquisition (Details) - USD ($)
$ in Millions
9 Months Ended
Mar. 30, 2019
Mar. 31, 2018
Mar. 30, 2018
Schedule Of Asset Acquisition [Line Items]      
Payments for manufacturing equipment $ 1.3 $ 0.0  
Transition Services Agreement      
Schedule Of Asset Acquisition [Line Items]      
Required cash payment upon completion of certain milestones related to purchase of equipment     $ 5.3
Payments for manufacturing equipment 1.3    
Additional accrued amount for manufacturing equipment $ 3.0