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Debt (Detail) - USD ($)
3 Months Ended 9 Months Ended
Mar. 27, 2020
Mar. 31, 2019
Mar. 27, 2020
Mar. 31, 2019
Jun. 30, 2019
Sep. 28, 2018
Debt Instrument [Line Items]            
Proceeds from issuance of debt     $ 200,000,000 $ 81,500,000    
Long-term debt $ 200,000,000   200,000,000   $ 0  
Interest expense 58,000 $ 2,473,000 58,000 $ 6,928,000    
Amount of outstanding letter of credit 904,000   904,000      
Revolving Credit Facility            
Debt Instrument [Line Items]            
Maximum borrowing capacity           $ 750,000,000
Term Loan            
Debt Instrument [Line Items]            
Debt issuance costs $ 4,705,000   $ 4,705,000