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Goodwill and Intangible Assets - Components of Identifiable Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 26, 2019
Jun. 27, 2019
Dec. 27, 2018
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross $ 38,360 $ 38,360 $ 38,360
Less accumulated amortization:      
Total accumulated amortization (25,078) (23,734) (22,390)
Net intangible assets 13,282 14,626 15,970
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 21,100 21,100 21,100
Less accumulated amortization:      
Total accumulated amortization (15,438) (14,466) (13,494)
Brand Names [Member]      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 16,990 16,990 16,990
Less accumulated amortization:      
Total accumulated amortization (9,527) (9,182) (8,838)
Non-compete Agreement [Member]      
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets, gross 270 270 270
Less accumulated amortization:      
Total accumulated amortization $ (113) $ (86) $ (58)