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Leases, Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 30, 2018
Commitments Contingencies And Litigation [Line Items]      
Operating lease right-of-use assets $ 21.0 $ 27.8  
Operating lease, liability $ 21.1 28.4  
Lease Option to Extend The leases expire at various dates through fiscal year 2028, some of which include options to extend the lease for up to 5 years.    
Lease Expiration Year 2028    
Lessee, Operating Lease, Existence of Option to Extend true    
Operating Leases, Expense $ 8.8    
Operating Lease, Weighted Average Remaining Lease Term 4 years 1 month 2 days    
Operating Lease, Weighted Average Discount Rate, Percent 4.01%    
Total rent expense, recognized on a straight-line basis   $ 10.3 $ 12.0
Maximum [Member]      
Commitments Contingencies And Litigation [Line Items]      
Duration of Extending leases 5 years