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Leases - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 25, 2020
Jun. 27, 2019
Jun. 28, 2018
Jun. 28, 2019
Operating Leased Assets [Line Items]        
Operating lease right-of-use assets $ 4,351      
Operating lease, liability 4,366      
Operating leases not yet commenced $ 89      
Rental expense under operating leases agreements   $ 1,981 $ 1,988  
Gross rental income   $ 1,978 $ 1,988  
Minimum [Member]        
Operating Leased Assets [Line Items]        
Discount rate       4.20%
Lessee operating lease lease not yet commenced term 3 years      
Maximum [Member]        
Operating Leased Assets [Line Items]        
Discount rate       5.80%
Remaining lease term 5 years 2 months 12 days      
Lessee operating lease lease not yet commenced term 5 years      
Accounting Standards Update 2016-02 [Member]        
Operating Leased Assets [Line Items]        
Operating lease right-of-use assets       $ 5,361
Operating lease, liability       $ 5,320