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Goodwill and Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jun. 28, 2018
Jun. 27, 2019
Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]      
Gross goodwill balance at June 30, 2017     $ 8,766
Accumulated impairment losses     $ (8,766)
Goodwill acquired during fiscal 2018 $ 9,650    
Balance at June 27, 2019 $ 9,650 $ 9,650